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MTF and Micro Contrast

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Newest blog posts

2018-11-27 How Good is the Resolving Power of the Pentax K-1 Mark II versus a 100-Megapixel Medium Format Camera

2018-10-09 Nikon Z7: Image Sharpness vs Zone of Focus, Autofocus Error and Mitigation

2018-09-07 Canon RF 24-105mm f/4 IS vs Nikon NIKKOR Z 24-70mm f/4 S: What Does the MTF Chart Tell Us?

2018-09-07 MTF Services Unveils the First Lens Adapters for Nikon Z-Mount

2018-01-28 Sony A7R III Pixel Shift: How Distortion Correction Affects Micro Contrast and Sharpness with Sony 24-105/4G OSS @ 105mm

2018-01-28 Sony A7R III Pixel Shift: How Distortion Correction Affects Micro Contrast and Sharpness with Sony 24-105/4G OSS @ 24mm

2017-12-04 New Article on Zeiss Lenspire Site: “Getting started with Focus Stacking – How to achieve more detailed images”

2017-11-07 Zeiss Milvus 25mm f/1.4: Optical Construction and Siemens Star MTF Analysis

2017-10-27 Nikon D850: 'Focus shift shooting' Feature Most Important Feature since Live View; Focus Stacking is the ONLY Solution to Full Resolution Images

2017-10-18 Zeiss Milvus 25mm f/1.4: MTF, Distortion, Vignetting

View all related blog posts...

Getting Started

Introduction and overview of making sharp images..

1. Sharpness and Blur Counterpoint

Blur from Camera or Support

Sharpness loss by camera or support or technique..

1. Resolving to Sensor Resolution

Digital Sensor Technology

Digital capture technology is discrete, and not the same as film..

1. Resolution with Color Sensor vs Monochrome Sensor
2. Resolving to the Sensor Resolution

Post Processing for Sharpness

Making image captures look sharp..

1. Restoring Sharpness Lost from Digital Capture (RAW)
2. Restoring Sharpness Lost to Digital Capture
3. Local Contrast Enhancement for Perceived Sharpness
4. Levels and Curves for Higher Perceived Sharpness
5. Mitigating Micro Contrast Losses from Diffraction Blur

Focus Stacking Overview

Bypass the limits on depth of field and diffraction..

1. Focus Stacking = ONLY Solution for Full Resolution with High-Res Digital
2. Focus Stacking Gains in Sharpness vs Single Frame, File Size as a Proxy Measurement

Focus Stacking Examples

Examples of Focus Stacking..

1. Example: Shallow Stack for Sharpness in Narrow Zone (Blue Engine on Green Machine)

Diffraction

Getting peak performance from your lens.

1. Diffraction—Resolution Taxed to Its Limits
2. Example—Resolution Chart
3. Diffraction Limits for High Resolution DSLR (Dolls, Nikon D7100)

Field Curvature

Zone of focus, not plane of focus.

1. Looking for Sharpness in all the Wrong Places
2. Field Curvature and MTF Charts

Focus Shift and Spherical Aberration

Elusive sharpness, depending on aperture.

1. Optics (MTF)

Understanding Modulation Transfer Function (MTF)

Understanding resolution and contrast graphs..

1. MTF Introduction
2. Fantasy Land MTF
3. Reading MTF Charts
4. MTF Measurement vs Field Curvature
5. MTF and Sensor Size
6. Lateral Chromatic Aberration and Astigmatism
7. Zeiss MTF Examples
8. Leica MTF Examples
9. Leica MTF Analysis / Summilux, Elmarit, Elmar 24mm
10. Leica MTF For Leica 35/1.4 Summilux-M ASPH
11. Canon MTF Examples
12. Nikon MTF Examples

How to Test A Lens

How to verify a good sample and assess all aspects of lens performance..

1. Choosing a Test Scene for Evaluating Sharpness

Optical Behavior (Case Studies)

Illuminating examples of lens behavior..

1. Asymmetric Sharpness with Leica 180mm f/3.5 APO-Elmar-S

Research — Handheld Shooting

Research into sharpness of handheld images with and without image stabilization.

1. Handheld Sharpness

Research — Tripods and Camera Technique

Stability of tripods and ballheads, controlling camera vibration, selecting equipment..

1. Shutter Speed and Critical Sharpness on a Tripod
2. Sharpness on Light/Medium/Heavy Tripods
3. Sharpness with Mirror Lockup, Exposure Delay, VR

Expose To The Right (ETTR)

Maximizing image quality, dynamic range, minimizing digital noise.

1. How JPEG Sharpness and Contrast Settings Affect Live View

Nikon D850

The best becomes better..

1. Sensor Resolution: Technical Challenges in Exploiting It
2. D850 vs D810 Sharpness: Pine Creek Forested Hillside

Nikon D850 Image Quality

Oustanding image quality, but with some limitations..

1. Examples of Outstanding Resolving Power

Nikon D810

Improvements on the workhorse D800E..

1. D810 vs D800E: ISO 3200 Noise + White Balance + Sharpness (Decorated Bike)
2. D810 vs D800E: Depth of Sharpness (Decorated Bike, ISO 100/64)

Nikon D800E

36 megapixels in a compact full-frame DSLR..

1. Resolution: D3s vs D800 from ISO 100 to 12800 (Dolls)

Nikon D800 / D800E Image Quality Best Practices

Image quality best practices and how-to with the Nikon D800/D800E..

1. Sharpness with RAW vs JPEG

Nikon D800E vs D800

D800E supplement and comparisons with Nikon D800..

1. D800 vs D800E Sharpness
2. D800E vs D800 RAW Sharpening Comparison (Aerial, Fountain)
3. D800E vs D800 RAW Sharpening Comparison (Dolls)

Nikon D800E vs Canon EOS 5D Mark III

Comparing the 2012/2013 high-res pro DSLRs..

1. Canon 5DM3 vs Nikon D800E: Sharpness (Dolls / Pellegrino)

Nikon D4

Nikon’s pro-body high speed low light wonder..

1. Resolution of Nikon D4 vs D3s and D800 (Dolls)
2. Resolution of Nikon D4 vs D3s and D800 (Dolls), ISO 50 - 204800

Nikon D3200

24-megapixel APS-C consumer DSLR..

1. D3200 Sharpness from ƒ/4 - ƒ/45

Canon EOS 1D X

18 megapixel big black brick, Canon’s top of the line DSLR..

1. Resolution: 1D X vs 5D Mark III (Dolls)

Canon EOS 5D Mark III

22 megapixel successor to the popular 5D Mark II..

1. Sharpness: RAW vs JPEG

Canon EOS 5DS / 5DS R

50 megapixel successor to the 22 megapixel Canon 5D Mark III..

1. RAW vs mRAW: Sharpness, Tone, Color
2. RAW vs sRAW: Sharpness, Tone, Color
3. What 50 Megapixels of Sharpness Looks Like (Dolls)
4. Sharpness: 5DS R vs 5D Mark III (Mosaic)
5. Sharpness: 5DS R vs 5DS vs 5D Mark III (Zeiss Siemens Chart)
6. Sharpness: 5DS R vs 5DS vs 5D Mark III vs Nikon D810 (Old Map)
7. Noise at ISO 100, Native Resolution and at Canon 5DM3 Resolution (Dolls)

Nikon D3s

Nikon D3s low-light versatile DSLR..

1. Limits of Resolution—Golden Gate

Nikon AF-S Nikkor 200mm f/2G ED VR II

Ultra fast 200mm with gorgeous bokeh and high resolving power..

1. Sharpness and Focus Shift at Close Range, Dolls (Nikon D810)

Nikon D3x 24.4-megapixel DSLR review

Includes: D3x resolution comparisons (res chart) with Nikon D3, Canon EOS 1Ds Mark III, resolution comparison on outdoor shot with Nikon D3, large examples, large wildlife examples, Nikon 200mm f/2 VR on D3x, long exposure noise ISO series, D3x sensitivity on diffraction, D3x dynamic range at ISO 100 vs ISO 50, D3x vs D3 color and noise..

1. D3x Resolution vs Others
2. D3x Resolution vs Others
3. D3x vs D3 Matched Resolution

Canon 1D Mark IV

Canon 1D Mark IV 16-megapixel DSLR..

1. Sharpness Example over Aperture Range

Nikon vs Canon: noise and sharpness

Nikon vs Canon: Noise and Sharpness.

1. Sharpness—creek scene at dusk
2. Sharpness—extensive comparison

Canon 14mm f/2.8L II

In-depth review of the Canon EF 14mm f/2.8L II including flare, distortion, field curvature, resolution charts, numerous field examples and comparison to the Nikon 14-24mm f/2.8G. The Canon EF 14/2.8L II is a superb lens, but with some peculiarities which may enhance or degrade its appeal for different uses. The review is as much a “user guide” as a review; even if you use this lens it’s well worth your time to read this review..

1. Resolution Chart on 10.1MP EOS 1D Mark III
2. Resolution Chart on 21.1MP EOS 1Ds Mark III

Nikon 85mm f/2.8D PC-E Micro-Nikkor

Medium telephoto tilt/shift macro focusing lens.

1. MTF

28mm Shift Lenses for Nikon

[Archive] In-depth review on the Nikon D2x of the Nikon 28mm f/3.5 PC-Nikkor, Nikon 28mm f/4 PC-Nikkor and the Schneider 28mm f/2.8 PC-Super-Angulon. Flare, distortion, color fringing, color rendition, sharpness, ergonomics, aligmnent, sample variation..

1. Resolution Charts

Pentax K-1 Mark II

Verions 2 — 36-megapixel full-frame DSLR with SuperRes Pixel Shift Mode..

1. Examples: Resolving Power with Pixel Shift
2. Pixel Shift vs Single-Shot: Poleta Mining Milling Building

Pentax K-1

36-megapixel full-frame DSLR with SuperRes Pixel Shift Mode..

1. Super Resolution Pixel Shift Mode
2. Super Resolution Mode File Format

Pentax K-3 II (APS-C)

24-megapixel APS-C DSLR with SuperResolution true-color..

1. SuperResolution: Checkerboard Effect
2. SuperResolution: Zeiss Siemens Test Target
3. SuperResolution: Texture and Detail (Flower Paper)
4. SuperResolution: Fabric and Color (Cycling Jersey)
5. SuperResolution: Tarnished Silver Pitcher
6. SuperResolution: Ultra Fine Details (Silver Coin, Engraving, Carved-Stone Box)

Tamron SP 15-30mm f/2.8 Di VC USD

Tamron’s ultra wide to medium fast zoom..

1. Image Stabilization on Tripod Destroys Sharpness (Nikon D810, Dark Rocks)

Sigma 20mm f/1.4 DG HSM Art

The fastest extreme wide angle yet..

1. MTF for Sigma 20mm f/1.4 DG HSM Art

Sigma 24mm f/1.4 DG HSM Art

Sigma’s fast high performance wide angle..

1. MTF for Sigma 24mm f/1.4 DG HSM Art

Sigma 50mm f/1.4 DG HSM Art

Sigma’s fast high performance normal lens..

1. MTF for Sigma 50mm f/1.4 DG HSM A

Sigma 85mm f/1.4 DG HSM Art

Sigma’s best portrait lens..

1. MTF for Sigma 85mm f/1.4 DG HSM Art

Sigma 135mm f/1.8 DG HSM Art

Fastest 135mm lens yet, with ultra high performance..

1. MTF for Sigma 135mm f/1.8A

Schneider PC-TS Perspective Control Tilt/Shift Lenses

Tilt/Shift by Schneider for Canon and Nikon and other brands..

1. Higher Resolution from Stitching Multiple Frames, 90/4.5

Sigma 50mm f/1.4 EX DG HSM on Canon EOS 1Ds Mark III

The Sigma 50mm f/1.4 is a worthy contender in the crowded 50mm area. See how it performs compared to the Canon EF 50/1.4 and EF 50/1.2L..

1. Modulation Transfer Function (MTF)

Nikon AF-S 24-120mm f/4G VR

Nikon’s latest wide range zoom with vibration reduction and fixed f/4 aperture..

1. MTF Curves

Nikon AF-S Nikkor 50mm f/1.4G

Nikon’s latest 50mm lens compared with the Zeiss ZF 50/1.4, Nikon 50/1.4D and Sigma 50/1.4..

1. Modulation Transfer Function (MTF)

Nikon AF-S Nikkor 50mm f/1.8G

Nikon’s High Performance Moderately-Priced 50mm..

1. MTF Chart for Nikon 50mm f/1.8G

Nikon AF-S Nikkor 58mm f/1.4G

Nikon’s High performance normal lens.

1. MTF Chart

Canon 24mm f/1.4L II

State of the art design in a fast ultra wide angle lens..

1. Field curvature and Aberrations (Night-time)

Nikon AF Micro Nikkor 200mm f/4.0D IF-ED

Nikon’s workhorse 200mm macro lens, and not just sharp at close-ups!.

1. Central Sharpness At Distance
2. Achieving Corner to Corner Sharpness: Mosaic

Nikon AF-S Nikkor 20mm f/1.8G

Nikon’s fast ultra wide angle..

1. MTF for Nikon 20mm f/1.8G

Nikon AF-S Nikkor 24mm f/1.8G

Versatile autofocus wide angle..

1. MTF for Nikon 24mm f/1.8G

Coastal Optics 60mm f/4 UV-VIS-IR APO Macro

A superlative multi-spectral lens with perfect color correction..

1. MTF

Canon 11-24mm f/4L USM

Extreme wide angle zoom..

1. MTF for Canon 11-24mm f/4L

Canon 16-35mm f/2.8L III

Is the 3rd time the charm?.

1. MTF for Canon 16-35mm f/2.8L III

Canon 16-35mm f/4L IS

Canon’s compact image stabilized wide angle zoom..

1. MTF for Canon 16-35mm f/4L IS

Nikon AF-S 35mm f/1.8G

Relatively inexpensive alternative to the pro 35/1.4G..

1. MTF for Nikon 35/1.8G

Nikon AF-S 85mm f/1.4G

State of the art design in a fast 85mm lens..

1. Modulation Transfer Function (MTF)

Nikon AF-S 300mm f/4E PF ED VR

Compact and lightweight travel-friendly telephoto..

1. MTF for Nikon AF-S 300mm f/4E PF ED VR

Nikon Ultra Wide Zooms

Comparing Nikon 16-35mm f/4 VR, 17-35mm f/2.8, 14-24mm f/2.8, 18-35mm, 24-70mm f/2.8 along with Nikon 20mm f/3.5, 24mm f/2, 28mm f/2, 35mm f/1.4 AIS, and more..

1. Download Full Resolution Mosaic @ f/5.6

Nikon AF-S 14-24mm f/2.8G ED

Nikon’s ultra wide angle zoom and the Nikon 14mm f/2.8, critical focus shift behavior..

1. Focus Shift with Nikon 14-24 Cuts Resolution In Half!!!

Hartblei 40/80/120mm SuperRotators

Medium format Zeiss glass in Hartblei precision tilt/shift lens barrels!.

1. Resolution chart—40/4
2. Resolution chart—80/2.8
3. Resolution chart—120/4
4. Field shot aperture series crops—40/4
5. Field shot aperture series crops—80/2.8
6. Field shot aperture series crops—120/4
7. Resolution from Diffraction —120/4
8. MTF for Hartblei 40mm f/4
9. MTF for Hartblei 80mm f/2.8
10. MTF for Hartblei 120mm f/4

Canon RF 35mm f/1.8 Macro STM

All-arounder compact lens with macro capability..

1. MTF for Canon RF 35mm f/1.8 Macro STM

Canon RF 50mm f/1.2L USM

High speed normal lens optimized for Canon mirrorless..

1. MTF for Canon RF 50mm f/1.2L

Canon RF 24-105mm f/4L IS USM

Bread and butter all-around zoom..

1. MTF for Canon RF 24-105mm f/4L IS USM

Canon RF 28-70mm f/2L USM

Bread and butter all-around zoom..

1. MTF for Canon RF 28-70mm f/2L USM

Nikon NIKKOR Z 35mm f/1.8 S

Moderate wide angle expressly designed for Nikon Z cameras..

1. MTF for Nikon NIKKOR Z 35mm f/1.8

Nikon NIKKOR Z 50mm f/1.8 S

Normal lens expressly designed for Nikon Z cameras..

1. MTF for Nikon NIKKOR Z 50mm f/1.8

Nikon NIKKOR Z 24-70mm f/4 S

Mid-range zoom expressly designed for Nikon Z cameras..

1. MTF for Nikon NIKKOR Z 24-70mm f/4S

Sony Alpha A7R

Full frame compact mirrorless with interchangeable lenses..

1. Mitigating A7R Micro Contrast Diffraction Losses with Sharpening

Sony Planar T* FE 50mm f/1.4 ZA

Fast high performance normal lens of Zeiss design..

1. MTF for Sony FE 50mm f/1.4

Sony FE 35mm f/2.8 ZA Sonnar

Compact moderate wide angle for Sony mirrorless..

1. MTF for Sony FE 35mm f/2.8 ZA Sonnar

Sony FE 55mm f/1.8 ZA Sonnar

Compact normal lens for full-frame Sony mirrorless..

1. MTF for Sony FE 55mm f/1.8 ZA Sonnar

Sony FE 85mm f/1.4 GM

Top-grade medium telephoto..

1. MTF

Sony FE 24-105mm f/4 G OSS

Wide angle to telephoto zoom with optical stabilization..

1. Distortion Correction @ 24mm: Loss of Sharpness and Micro Contrast (Pixel Shift)
2. Distortion Correction @ 105mm: Loss of Sharpness and Micro Contrast (Pixel Shift)

Sony FE 70-200mm f/2.8 GM OSS

Premiere telephoto zoom for Sony full frame mirrorless.

1. Examples: Sharpness in the Field, Focusing, Lens Quality Issues

Fujifilm Finepix X100

The best compact big-sensor digital camera yet?.

1. MTF Charts for Fujifilm X100
2. Lens Blur, Asymmetric sharpness
3. High Shutter Speeds Degrade Sharpness
4. RAW vs JPEG — Sharpness and Noise

Ricoh GR

Razor sharp 28mm lens on APS-C sensor and outstanding usability and features..

1. Ricoh GR Lens MTF Analysis

Sony DSC-RX100

Stunningly high image quality in a 20MP point and shoot tiny camera..

1. Realistic Real-World Resolution
2. Sensor Size and Resolution

Sigma DN 30mm f/2.8

Normal lens for Micro Four Thirds or Sony E Mount/NEX..

1. Examples: Sharpness at Distance

Olympus OM-D E-M5

Superb ergonomic design in a compact camera..

1. Sensor Size and Resolution

Olympus OM-D E-M5 Mark II

Updated model with hi-res sensor shift mode..

1. Hi-Res Sensor Shift Mode vs Standard Resolution, RESOLUTION (Mining Museum)
2. Hi-Res Sensor Shift Mode vs Standard Resolution, NOISE (Mining Artifacts)

Olympus E-P1 micro-4/3 camera

Great image quality, but....

1. Resolution that will blow your socks off

Panasonic G-1 micro-4/3 camera

Panasonic G-1 especially compared to the Olympus E-P1. Intriguing results with RAW vs in-camera JPEG. RAW file included for your own analysis..

1. Resolution

Fujifilm X-E1

Compact sibling of the Fujifilm X-Pro1.

1. Fujifilm X-E1 Focus Creep Kills Sharpness

Sony NEX-7 and NEX-5N

24 or 16 megapixels in a compact body with APS-C sensor..

1. Ray Angle, Color Shift, Sharpness

Zeiss Loxia 21mm f/2.8 Distagon

Outstanding ultra wide angle performer..

1. MTF for Zeiss Loxia 21/2.8 Distagon

Zeiss Loxia 25mm f/2.4 Distagon

Outstanding wide angle, superb performer..

1. MTF for Zeiss Loxia 25mm f/2.4 Distagon from f/2.4 to f/16

Zeiss Loxia 35mm f/2 Biogon

Manual focus moderate wide angle for full-frame mirrorless..

1. MTF for Zeiss Loxia 35/2 Biogon

Zeiss Loxia 50mm f/2 Planar

Manual focus normal lens for full-frame mirrorless..

1. MTF for Zeiss Loxia 50/2 Planar

Zeiss Loxia 85mm f/2.4 Sonnar

Manual focus telephoto lens for full-frame mirrorless..

1. MTF for Zeiss Loxia 85mm f/2.4 Sonnar from f/2.4 to f/16

Zeiss Batis 18mm f/2.8 Distagon

Autofocus extreme wide angle for Sony full-frame mirrorless..

1. MTF for Zeiss Batis 18/2.8 Distagon

Zeiss Batis 25mm f/2 Distagon

Autofocus wide angle for Sony full-frame mirrorless..

1. MTF for Zeiss Batis 25/2 Distagon

Zeiss Batis 40mm f/2

All-around slightly wide angle/normal with close focus..

1. MTF for Zeiss Batis 40mm f/2

Zeiss Batis 85mm f/1.8 Sonnar

Autofocus portrait lens for Sony full-frame mirrorless..

1. MTF for Zeiss Batis 85/1.8 Sonnar
2. On a Tripod With SteadyShot / Image Stabilization = Damaged Sharpness (Sony A7R, Through the Boulders)

Zeiss Batis 135mm f/2.8 APO-Sonnar

Apochromatic pin-sharp medium telephoto for Sony full-frame mirrorless..

1. MTF for Zeiss Batis 135/2.8 APO-Sonnar

Zeiss Touit 12mm f/2.8 Distagon

Ultra wide angle lens for Sony NEX or Fujifilm X..

1. MTF (also vs Zeiss and Leica)
2. Aperture Series: Sharpness and Bokeh (Picnic Table, NEX-7)

Zeiss Touit 32mm f/1.8 Planar

Normal lens for Sony NEX or Fujifilm X..

1. MTF (also vs Zeiss and Leica)

Zeiss Touit 50mm f/2.8M

Moderate telephoto macro lens for Sony NEX or Fujifilm X. Useful on full frame too!.

1. MTF for Touit 50/2.8M

Sigma Photo Pro Software 6.x

Sigma’s raw file processing software, version 6.x..

1. SPP Does not Support Retina or 4K Display Resolution

Sigma dp2 Quattro

45mm f/2.8 equivalent FOV lens..

1. dp2 Quattro MTF

Sigma DP1 Merrill

28mm f/2.8 equivalent lens on APS-C sensor..

1. Resolution — DP1 Merrill vs Nikon D600 (Yellow Aspen)

Fujifilm GF 23mm f/4 R WR

Ultra wide angle equivalent to 19mm f/3.3. .

1. Distortion Correction and Micro Contrast Losses

Hasselblad HC 50mm f/3.5 II

High performance moderate wide angle.

1. MTF

Hasselblad HC Macro 120mm f/4 II

High performance all-arounder macro lens.

1. MTF

Hasselblad XCD 30mm f/3.5

25mm equivalent..

1. MTF
2. XCD 30/3.5 Sharpness and Color Correction vs XCD 45/3.5

Hasselblad XCD 45mm f/3.5

37mm equivalent..

1. MTF for Hasselblad XCD 45mm f/3.5

Hasselblad XCD 90mm f/3.2

Medium format telephoto lens, 74mm equivalent..

1. MTF for Hasselblad XCD 90mm f/3.2

Hasselblad XCD 120mm f/3.5

Telephoto macro lens, 99mm equivalent..

1. MTF for Hasselblad XCD 120mm f/3.5

Pentax 645Z Image Quality

High end image quality, but what about lenses?.

1. 645Z Diffraction Effects on Micro Contrast

Leica S2 37.5 Megapixel Medium Format DSLR

How does Leica’s medium format entry measure up in ergonomics, image quality, etc?.

1. Precision for Maximum Resolution

Leica S Typ 006

The last CCD-sensor Leica S model..

1. Error-Prone Autofocus Damages Sharpness (S006)

Leica 24mm f/3.5 Super-Elmar-S ASPH

Extreme wide angle with ultra high performance..

1. MTF Analysis for Leica 24mm f/3.5 Super-Elmar-S ASPH

Leica 45mm f/2.8 Elmarit-S ASPH

Moderate wide angle with low distortion..

1. MTF Analysis for Leica 45mm f/2.8 Elmarit-S ASPH

Leica 100mm f/2 Summicron-S ASPH

The fastest S lens..

1. MTF Analysis for Leica 100mm f/2 Summicron-S ASPH

Image Quality Issues

Unique challenges of digital infrared..

1. Sharpness
2. Sharpness in Visible Light vs Infrared
3. Sharpness in Red/Green/Blue Channels
4. Choice of Aperture / Depth of Field

Milvus 15mm f/2.8

Milvus garb for the venerable 15/2.8 Distagon, with improved lens coating..

1. MTF for Milvus 15/2.8

Milvus 18mm f/2.8

An outstanding 18mm design..

1. MTF for Milvus 18/2.8 from f/2.8 to f/16

Milvus 21mm f/2.8

The classic 21/2.8 Distagon improved..

1. MTF for Milvus 21/2.8

Milvus 25mm f/1.4

Highest performing 25mm from Zeiss ever..

1. MTF for Milvus 25/1.4
2. Siemens Star MTF Analysis @ 30 lp/mm

Milvus 35mm f/1.4

Highest performing 35mm from Zeiss ever..

1. MTF for Milvus 35/1.4

Milvus 35mm f/2

Classic design in the latest Milvus build..

1. MTF for Milvus 35/2

Milvus 50mm f/1.4

Outstanding build and optical quality in a normal lens..

1. MTF for Milvus 50/1.4, f/1.4 - f/16

Milvus 50mm f/2M

The classic 50/2 Makro-Planar improved..

1. MTF for Milvus 50/2M

Milvus 85mm f/1.4

Outstanding build and optical quality in a medium tele..

1. MTF for Milvus 85/1.4, f/1.4 - f/16

Milvus 100mm f/2M

The classic 100/2 Makro-Planar improved..

1. MTF for Milvus 100/2M

Milvus 135mm f/2

On Otus, in effect. Milvus garb for the 135/2 APO, with improved lens coatings on one element. See the ZF.2/ZE 135/2 review pages..

1. MTF for Milvus 135/2

Optical Performance

Sharpness and rendering..

1. Resolution Charts Overview
2. Modulation Transfer Function (MTF) Discussion

15mm f/2.8 Distagon

Ultra high performance in an extreme wild wide angle lens..

1. 15/2.8 MTF Chart
2. Case Study: Focus Bracketing for Best Sharpness (Bristlecone)
3. Field Curvature and MTF and Focus (Nikon D800E, Mosaic)

18mm f/3.5 Distagon

A brilliant, but also colorful character..

1. MTF Chart
2. Resolution Chart

21mm f/2.8 Distagon

Brilliant imaging, even wide open, but with a few quirks. (Review in progress) .

1. MTF Chart

25mm f/2 Distagon

Ultra high performance with a fast aperture..

1. MTF Chart

25mm f/2.8 Distagon

A gem with unusual close-focus..

1. MTF Chart
2. Resolution Chart

28mm f/2 Distagon

An artist’s drawing tool..

1. MTF Chart
2. Resolution Chart

35mm f/1.4 Distagon

Strokes of a master..

1. MTF For 35/1.4 Distagon

35mm f/2 Distagon

Balance and poise..

1. MTF Charts
2. Resolution Chart

50mm f/1.4 Planar

Brilliant imaging in a compact package..

1. MTF Chart
2. Resolution Chart

50mm f/2 Makro-Planar

Versatility in a “normal” lens and macro too!.

1. MTF Chart
2. Resolution Chart
3. Performance on 56-megapixel DSLR Pixel Density + MTF (Nikon D7100 + Sony NEX-7, Blue Doll)

Otus 28mm f/1.4 APO-Distagon

Fast high performance APO wide angle..

1. MTF for Zeiss Otus 28/1.4

Otus 55mm f/1.4 APO-Distagon

Ultra high performance apochromatic normal lens, first in the Otus line..

1. MTF Across Entire Aperture Range
2. Through-Focus MTF at ƒ/2.8 (Field Flatness and Focus Precision)
3. Aperture Series: Edge to Edge Sharpness (Rulers on Table)

Otus 85mm f/1.4 APO-Planar

Ultra high performance apochromatic medium telephoto, overview and technical..

1. MTF for Otus 85/1.4 APO-Planar

85mm f/1.4 Planar

True-to-life imagery..

1. MTF Chart
2. Resolution Chart

100mm f/2 Makro-Planar

King of bokeh! Corner-to-corner sharpness, world class..

1. MTF Chart
2. Resolution Chart

135mm f/2 APO-Sonnar

Beautiful bokeh, razor sharp, superb color correction..

1. MTF Chart
2. Performance on 56-megapixel DSLR Pixel Density + MTF (D7100, Dolls)

Reading the publications.

Tips for getting the most out of diglloyd publications..

1. Choosing Image Resolution and Scaling, Series and A/B Comparison
2. How to View Images at Full Retina Resolution
3. Retina Resolution with Scaled Images

Zeiss LensSpire Articles

Articles written for Lenspire.ZEISS.com..

1. Micro Contrast and the Zeiss 'Pop'

Understanding optics

Understanding lens performance..

1. Understanding Modulation Transfer Function (MTF)
2. Charles Sleicher Resolution Chart

Dell 4K UltraHD UP2414Q

A jaw-dropping visual experience for video or stills..

1. Full 4K Resolution at 60 Hz

Hartblei 40/80/120mm SuperRotators

Medium format Zeiss glass in Hartblei precision tilt/shift lens barrels!.

1. Resolution and Diffraction
2. Resolution chart—40/4
3. Resolution chart—80/2.8
4. Resolution chart—120/4
5. Field shot aperture series crops—40/4
6. Field shot aperture series crops—80/2.8
7. Field shot aperture series crops—120/4
8. MTF for Hartblei 40mm f/4
9. MTF for Hartblei 80mm f/2.8
10. MTF for Hartblei 120mm f/4

Nikon D200 vs D2x

Vintage 2006 comparative review of Nikon D200 vs Nikon D2x..

1. Resolution
2. Resolution-BuildingWithGrill
3. Resolution-BurnedOutCar
4. Resolution-Forest105
5. Resolution-SulfurMine
6. Resolution-lighthouse
7. Resolution-res-chart

Leica M Typ 240 Compared To APS-C Cameras

Relative sharpness and performance vs APS-C cameras..

1. M240 at 28mm vs Sigma DP1 Merrill: Native Resolution
2. M240 at 28mm vs Sigma DP1 Merrill: Matched Resolution
3. M240 at 28mm vs Sigma DP1 Merrill: Downsampled Resolution

Leica M Monochrom (original)

Ultimate resolution in black and white..

1. Filters and Focus Error / Sharpness

Leica M Monochrom Typ 246

24-megapixel CMOS monochrome sensor..

1. Examples: Just How Sharp is the Leica M Monochrom Typ 246?

Leica Q (Typ 116)

24-megapixel fixed lens compact full-frame..

1. Leica Q: Extreme Distortion Degrades Sharpness, Reduces True Resolution, Decreases Field of View

Leica 16-18-21mm f/4 Tri-Elmar-M ASPH

Leica’s ultra wide angle zoom lens..

1. MTF: 16-18-21/4 Tri-Elmar-M ASPH
2. MTF vs 18/3.8
3. MTF vs 21/3.4

Leica 18mm f/3.8 Super-Elmar-M ASPH

Leica’s widest prime lens..

1. MTF: 18/3.8 Super-Elmar-M ASPH

Leica 21mm f/1.4 Summilux-M ASPH

Leica’s fastest and widest lens..

1. MTF: 21/1.4 Summilux-M ASPH

Leica 21mm f/3.4 Super-Elmar-M ASPH

Leica’s best-performing 21mm..

1. MTF: 21mm f/3.4 Super-Elmar-M ASPH

Leica 24mm f/1.4 Summilux-M ASPH

Leica’s fast wide angle..

1. MTF: 24mm f/1.4 Summilux-M ASPH

Leica 24mm f/2.8 Elmarit-M ASPH

A discontinued but excellent 24mm..

1. MTF: 24mm f/2.8 Elmarit-M ASPH

Leica 24mm f/3.8 Elmar-M ASPH

Leica’s best-performing 24mm, and with a flat field..

1. MTF: 24mm f/3.8 Elmar-M ASPH

Leica 28mm f/1.4 Summilux-M ASPH

Leica’s fast 28mm..

1. MTF for Leica 28mm f/1.4 Summilux-M ASPH

Leica 28mm f/2 Summicron-M ASPH (pre-2016)

Leica’s widest lens utilizing built-in frame lines..

1. MTF: 28mm f/2 Summicron-M ASPH

Leica 28mm f/2 Summicron-M ASPH (2016)

Tweaked 2016 redesign..

1. MTF

Leica 28mm f/2.8 Elmarit-M ASPH (2016)

Tweaked 2016 redesign of Leica’s petite performer..

1. MTF

Leica 28mm f/2.8 Elmarit-M ASPH (pre-2016)

Leica’s smallest and lightest M lens with superlative performance..

1. MTF: 28mm f/2.8 Elmarit-M ASPH

Leica 35mm f/1.4 Summilux-M ASPH (2010 FLE)

Leica’s superlative and most natural lens for the M..

1. MTF: Summilux-M 35mm /1.4 ASPH (2010 FLE)
2. MTF: Prior version vs 2010 Summilux-M 35mm /1.4 ASPH

Leica 35mm f/2 Summicron-M ASPH

Leica’s f/2 35mm for the M..

1. MTF: 35mm f/2 Summicron-M ASPH

Leica 35mm f/2.5 Summarit-M

Leica’s Budget 35mm lens..

1. MTF: 35mm f/2.5 Summarit-M

Leica 50mm f/0.95 Noctilux-M ASPH

World’s fastest 50mm full-frame lens..

1. MTF: 50/0.95 Leica Noctilux-M ASPH

Leica 50mm f/1.4 Summilux-M ASPH

Leica’s superlative normal lens..

1. MTF: 50mm f/1.4 Summilux-M ASPH

Leica 50mm f/2 APO-Summicron-M ASPH

The world’s best 50mm lens is outstanding, but with some limits..

1. MTF: 50mm f/2 APO-Summicron-M ASPH

Leica 50mm f/2 Summicron-M

Leica’s compact low-distortion normal lens..

1. MTF: 50/2 Summicron-M

Leica 50mm f/2.5 Summarit-M

Leica’s Budget 50mm lens..

1. MTF: 50mm f/2.5 Summarit-M

Leica 75mm f/1.25 Noctilux-M ASPH

Leica’s ultra high grade and ultra fast modern short telephoto..

1. MTF

Leica 75mm f/2 APO-Summicron-M ASPH

Leica’s medium tele for Leica M..

1. MTF: 75mm f/2 APO-Summicron-M ASPH

Leica 75mm f/2.4 (2.5) Summarit-M

Leica’s budget 75mm medium telephoto..

1. MTF: 75mm f/2.4 (2.5) Summarit-M

Leica 90mm f/2 APO-Summicron-M ASPH

Leica’s longer tele for Leica M..

1. MTF: 90mm f/2 APO-Summicron-M ASPH

Leica 90mm f/2.2 Thambar-M

Leica’s retro telephoto..

1. Leica 90mm f/2.2 Thambar-M, MTF

Leica 90mm f/2.4 (2.5) Summarit-M

Leica’s compact 90mm for the M..

1. MTF: 90mm f/2.4 (2.5) Summarit-M

Leica 90mm f/4 Macro-Elmar-M

Diminutive telephoto and macro lens..

1. MTF

Leica 135mm f/3.4 APO-Telyt-M

Leica’s longest M lens..

1. MTF: 135mm f/3.4 APO-Telyt-M

Leica 90mm f/2 APO-Summicron-R ASPH

Compact lens for portraiture or similar..

1. MTF: 90/2 APO-Summicron-R ASPH

Leica 100mm f/2.8 APO-Macro-Elmarit-R

Superb all-around macro and general-purpose lens..

1. MTF: 100/2.8 APO-Macro-Elmarit-R

Leica 180mm f/2.8 APO-Elmarit-R

World’s best mid-range telephoto lens..

1. MTF: 180mm f/2.8 APO-Elmarit-R

Leica 280mm f/4 APO-Telyt-R

Compact and ultra high performance long telephoto..

1. MTF: 280/4 APO-Telyt-R

Zeiss ZM 15mm f/2.8 Distagon

Notes and examples..

1. MTF: 15mm f/2.8 Distagon

Zeiss ZM 18mm f/4 Distagon

Compact high performance, ultra low distortion..

1. MTF: Zeiss ZM 18/4 Distagon

Zeiss ZM 21mm f/2.8 Biogon

Moderate speed high contrast ultra-wide..

1. MTF: Zeiss ZM 21/2.8 Biogon

Zeiss ZM 21mm f/4.5 C-Biogon

Zero distortion ultra-wide..

1. MTF: Zeiss ZM 21mm f/4.5 C-Biogon

Zeiss ZM 25mm f/2.8 Biogon

Compact wide angle with brilliant contrast..

1. MTF: Zeiss ZM 25mm f/2.8 Biogon

Zeiss ZM 28mm f/2.8 C-Biogon

Compact wide angle..

1. MTF: Zeiss ZM 28mm f/2.8 C-Biogon

Zeiss ZM 35mm f/1.4 Distagon

Fast and ultra high performance moderate wide angle rangefinder lens..

1. MTF for Zeiss ZM 35/1.4 Distagon
2. MTF on Mirrorless Cameras

Zeiss ZM 35mm f/2 Biogon

All around razor sharp performer..

1. MTF for ZM 35mm f/2 Biogon

Zeiss ZM 35mm f/2.8 C-Biogon

Ultra compact high performance moderate wide angle rangefinder lens..

1. MTF for ZM 35mm f/2.8 C-Biogon

Zeiss ZM 50mm f/2 Planar

Pleasing and relatively inexpensive normal lens.

1. MTF: ZM 50mm f/2 Planar

Zeiss ZM 85mm f/2 Sonnar

Ultra high performance (discontinued).

1. MTF for for ZM 85/2 Sonnar

Zeiss ZM 85mm f/4 Tele-Tessar

Compact high performance medium telephoto..

1. MTF for for ZM 85/4 Tele-Tessar

Blog posts, reverse chronological

2018

2018-11-27 How Good is the Resolving Power of the Pentax K-1 Mark II versus a 100-Megapixel Medium Format Camera

2018-10-09 Nikon Z7: Image Sharpness vs Zone of Focus, Autofocus Error and Mitigation

2018-09-07 Canon RF 24-105mm f/4 IS vs Nikon NIKKOR Z 24-70mm f/4 S: What Does the MTF Chart Tell Us?

2018-09-07 MTF Services Unveils the First Lens Adapters for Nikon Z-Mount

2018-01-28 Sony A7R III Pixel Shift: How Distortion Correction Affects Micro Contrast and Sharpness with Sony 24-105/4G OSS @ 105mm

2018-01-28 Sony A7R III Pixel Shift: How Distortion Correction Affects Micro Contrast and Sharpness with Sony 24-105/4G OSS @ 24mm

2017

2017-12-04 New Article on Zeiss Lenspire Site: “Getting started with Focus Stacking – How to achieve more detailed images”

2017-11-07 Zeiss Milvus 25mm f/1.4: Optical Construction and Siemens Star MTF Analysis

2017-10-27 Nikon D850: 'Focus shift shooting' Feature Most Important Feature since Live View; Focus Stacking is the ONLY Solution to Full Resolution Images

2017-10-18 Zeiss Milvus 25mm f/1.4: MTF, Distortion, Vignetting

2017-10-05 Zeiss Milvus 35mm f/1.4: Full MTF Series from f/1.4 through f/16

2017-10-01 D850 vs D810 Sharpness: Pine Creek Forested Hillside

2017-08-29 New Article on Zeiss Lenspire Site: “Micro Contrast and the Zeiss 'Pop'”

2017-08-26 Nikon D850: High Resolution Tilting Rear LCD with Touchscreen

2017-07-21 Sony A7R II Tripod Use: IBIS Damages Image Sharpness as it Always Has

2017-02-25 Fujifilm GFX 50s: Shooting with Different Aspect Ratios

2017-02-25 MTF for Fujifilm GFX GF Lenses

2016

2016-12-08 Zeiss Loxia 85mm f/2.4 MTF Series from f/2.4 to f/16

2016-12-08 Zeiss Milvus 18mm f/2.8: Full MTF Series from f/2.8 through f/16

2016-12-04 Nikon 19mm f/4E ED PC-E Aperture Series: Evaluating Sharpness at 12mm Shift Along the Short Axis (Mosaic, Nikon D810)

2016-12-04 Nikon 19mm f/4E ED PC-E Dual Aperture Series: Evaluating Sharpness at 12mm Shift (Mosaic, Nikon D810)

2016-11-10 Sigma 85mm f/1.4 DG HSM Art Arriving Friday for Testing

2016-11-07 MTF for the Sigma 85mm f/1.4 DG HSM Art

2016-11-01 Approaching Potential Sensor Resolution: Focus Stacking at 50 Megapixels (Lundy Beaver Pond, Canon 5Ds R)

2016-10-29 Approaching Potential Sensor Resolution: Focus Stacking at 50 Megapixels (Spotted Boulder, Canon 5Ds R)

2016-08-25 Sony A7R II IBIS (In Body Image Stabilization) Destroys Sharpness on a Tripod

2016-07-15 Depth of field and Sharpness: Conventional Thinking is Unrealistic Going Forward, Focus Stacking is One Solution

2016-07-07 iPhone Panoramas In Depth: Shooting & Post Processing Tips, Numerous Examples up to 11K Resolution

2016-05-15 Pentax K1 Super Resolution Mode has Color Problems, Definitely an Adobe Camera Raw BUG — 3rd Example With 'Push'

2016-05-13 Pentax K1 Super Resolution Mode has Color Problems, Definitely an Adobe Camera Raw BUG — 2nd Example

2016-05-13 Pentax K1 Super Resolution Mode: In-Depth Comparison to StdRes Mode (Dolls)

2016-05-13 Pentax K1 Super Resolution Mode: SuperRes Mode Ends Moiré

2016-05-12 Pentax K1 Super Resolution Mode has Color Problems, Definitely an Adobe Camera Raw BUG

2016-05-12 Pentax K1: Super Resolution Pixel Shift Mode at Night (30 sec X 4) — Artifacting Analyzed

2016-04-14 Zeiss Batis 18mm f/2.8 Distagon: MTF Can Be Better than the MTF Charts Show

2016-02-26 Pentax K3 II: SuperResolution Pixel Shift Mode vs StdRes: Carved Stone Box

2016-02-26 Pentax K3 II: SuperResolution Pixel Shift Mode vs StdRes: Tarnished Silver Dragonfly Pitcher

2016-02-25 Pentax K3 II: SuperResolution Pixel Shift Mode vs StdRes on Artifacts: Buffalo Coin and Engraved Letter Opener

2016-02-25 Reader Comment on Pentax K3 II Super Resolution Mode: “Museum Artifact Work”

2016-02-24 Pentax K3 II: Evaluating SuperResolution Pixel Shift Mode vs StdRes with Color and Texture

2016-02-24 Pentax K3 II: SuperResolution Pixel Shift Mode vs StdRes with Saturated Red and Blue Fabric (Cycling Jersey)

2016-02-23 Pentax K3 II in SuperResolution Pixel Shift Mode: Checkerboard Effect

2016-02-23 Pentax K3 II: Evaluating SuperResolution Pixel Shift Mode with Zeiss Siemens Star Chart

2016-02-21 Pentax K1: Super Resolution Mode Appears to be Best DSLR Quality Yet

2016-02-19 Pentax K1 Super Resolution File Format Details

2016-02-18 Pentax K1 Super Resolution Pixel Shift Mode

2016-02-17 Pentax K1: 36 Megapixels with Image Stabilization and Super Resolution Mode

2016-02-04 Sony Diffraction-Free Computed Fantasy MTF

2016-01-29 Leica Data Sheet for MTF of Leica 28mm f/2 Summicron-M ASPH Error

2015

2015-10-14 Zeiss Otus 28mm f/1.4 APO-Distagon MTF

2015-09-11 Complete MTF for Zeiss Milvus 50mm f/1.4 and Zeiss Milvus 85mm f/1.4 MTF

2015-09-11 Understanding the new Zeiss Milvus Lineup

2015-07-30 Leica 100mm f/2 Summicron-S ASPH: MTF Analysis

2015-07-06 Canon 5DS R: Corrections for Color Fringing More Important than at Lower Resolution

2015-07-04 Canon 5DS / 5DS R: mRAW is at Variance with Full-Resolution RAW in Several Ways

2015-06-21 Canon 5DS R is a Sharper and More Versatile Monochrome Camera than Leica M Monochrom Typ 246

2015-06-21 Canon 5DS R: new King of DSLR Resolution

2015-06-21 Shootout: Canon 5DS R vs Canon 5DS vs Canon 5D Mark III vs Nikon D810 (Old Map)

2015-06-20 Canon 5DS R: Resolving Power vs Canon 5DS and Canon 5D Mark III

2015-06-17 Canon 5DS R: Sharpness, Noise, Monochrome Potential

2015-06-17 Compared: Canon 5DS R vs Canon 5D Mark III (Sharpness, Mosaic)

2015-06-16 Canon 5DS R: Sharpness, Noise, Monochrome Potential

2015-06-15 Reader Comment: Portraits and Sharpness and Skin Tones with Sony A7, A7R, A7R II

2015-06-12 Canon 5DS R Expected Soon: What About Lenses and Sharpness?

2015-06-07 Leica M Monochrom Typ 246: Amazing Sharpness (examples)

2015-05-26 Sony FE 28mm f/2: Strong Distortion and How Correcting it Damages Sharpness

2015-05-24 Zeiss Batis 85mm f/1.8 Sonnar Caution: Sony SteadyShot Destroys Sharpness on a Tripod

2015-05-19 Sony FE 28mm f/2: Assessing Focus Shift and Color Correction and Sharpness at Close Range (Dolls, Sony A7R)

2015-04-29 Zeiss Batis 25mm f/2 Distagon: MTF Series from f/2 - f/16 + Distortion

2015-04-29 Zeiss Batis 85mm f/1.8 Sonnar: MTF Series from f/1.8 - f/16 + Distortion

2015-04-04 Choosing Image Resolution and Scaling, Series and A/B Comparison for Images at diglloyd.com

2015-04-01 Tamron SP 15-30mm f/2.8 Di VC USD: Image Stabilization Aperture Series on Tripod, Showing Sharpness Damage

2015-03-27 Sigma 24mm f/1.4 DG HSM Art, MTF

2015-02-27 Sharper Images by Technique and Shot Discipline

2014

2014-10-08 Zeiss Otus 85mm f/1.4 APO-Planar: Full MTF Series from f/1.4 - f/16

2014-09-16 Zeiss ZM 35mm f/1.4 Distagon for Leica M: Best 35mm M Lens Yet?

2014-09-03 Zeiss Loxia MTF Discussion

2014-07-06 Sharpness Fans, Your Ship Has Come In: Sigma dp2 Quattro Aperture Series 'Mosaic'

2014-07-01 The Effect of Focus Shift on Image Sharpness

2014-05-21 Sigma dp Quattro Sensor Spectral Sensitivity for True-Color Images with Full Spatial Resolution

2014-05-20 EVF and Sensor Resolution: Higher is So Much Better for Critical Focus

2014-05-13 My Most Important Publication: Making Sharp Images

2014-04-30 Wide Aperture and Sharpness Workshop with Zeiss APO Lenses For Participants

2014-04-18 Consistent Focusing Accuracy Requires a High-Resolution EVF: Leica M vs Sony

2014-03-26 Leica 16-18-21mm f/4 Tri-Elmar-M ASPH: Field of View, Distortion, MTF

2014-03-07 Leica 28m f/2 Summicron-M ASPH Aperture Series: Sharpness, examples

2014-03-01 Sigma DP1 Merrill: Class Leading Sharpness (Green Brick Summit Building)

2014-02-04 Leica M Typ 240: Support for the Higher Resolution VF-4 EVF Not Feasible

2014-01-22 Sigma 50mm f/1.4 DG HSM 'Art' (for Canon, Nikon, etc)

2014-01-13 Mitigating A7R Micro Contrast Diffraction Losses with Sharpening

2013

2013-10-25 Leica M240: Shutter Vibration Appears to Damage Image Sharpness

2013-10-08 MTF of Zeiss Otus 55mm f/1.4 APO-Distagon Wide Open

2013-08-03 Leica 35mm f/1.4 Summilux-M ASPH: Field Curvature and Focus Shift on a Planar Subject

2013-08-01 Field Curvature of the Zeiss 15mm f/2.8 Distagon with Focus Bracketing

2013-07-26 Making Sharp Images new page: Flange to Sensor Alignment, Fantasy Land MTF

2013-07-25 MTF vs Field Curvature and Tips for Optimizing Focus

2013-07-18 Ricoh GR: Lens Quality and MTF

2013-07-12 Focus Bracketing for Peak Sharpness with a 15mm Lens

2013-06-08 Leica 24mm f/3.8 Elmar-M ASPH: Is Stopping Down Needed?

2013-05-31 Zeiss Touit 12mm f/2.8 Distagon: Aperture Series Sharpness, Bokeh (Picnic Table, Sony NEX-7)

2013-05-19 Zeiss Touit 32mm f/1.8 Planar: Evening on the High Line in NYC

2013-05-18 Zeiss Touit 12mm f/2.8 Distagon: Examples, Evening Architecture

2013-05-18 Zeiss Touit 32mm f/1.8 Planar: MTF and Distortion and Vignetting Charts (for Sony NEX + Fuji X)

2013-05-17 Zeiss Touit 12mm f/2.8 Distagon: MTF and Distortion and Vignetting Charts (for Sony NEX + Fuji X)

2013-05-08 Nikon D800E vs Canon 5D Mark III: the Nikon D800E Optical Low Pass Blur+Unblur Filter Pack

2013-05-02 How the Nikon D800E Compares to the Canon 5D Mark III in Noise and Usable Dynamic Range

2013-05-02 Nikon D800E vs Canon 5D Mark III: Sharpness

2013-05-01 Per Pixel: How the Nikon D800E Compares to the Canon 5D Mark III (update)

2013-04-30 Per Pixel: How the Nikon D800E Compares to the Canon 5D Mark III

2013-04-26 Zeiss 15mm f/2.8 Distagon: Field Curvature, MTF, Focus (Mosaic)

2013-04-17 Sigma DP2 Merrill Sharpness: Impressive Sharpness and Realized Depth of Field

2013-04-15 Zeiss ZE 135mm f/2 APO-Sonnar IN STOCK for Canon

2013-03-29 Using the Sigma DP3 Merrill for Stitching: 66 Megapixels of Biting Sharpness

2013-03-28 Sigma DP3 Merrill Sharpness

2013-03-19 MTF at f/22 with the Zeiss 135mm f/2 APO-Sonnar

2013-02-23 Sometimes, Image Sharpness is a Handholding Problem

2013-02-08 When Will We See Canon Megapixels to Match Nikon?

2013-01-15 Zeiss 15mm f/2.8 Distagon: Field Curvature, MTF, Focus (Mosaic)

2012

2012-11-26 Sigma 35mm f/1.4 DG HSM: Quality Control Steps Up (“A1 MTF”)

2012-11-20 Canon 5D Mark III: ETTR Study of Optimal Exposure for RAW, RAW vs JPEG Exposure Latitude and Sharpness

2012-11-16 Nikon D800E: RAW vs JPEG Sharpness Study and Comparison

2012-11-13 Zeiss 135mm f/2 APO Sonnar for Nikon and Canon — Not Far off Now

2012-10-16 Sigma DP1 Merrill vs Nikon D600 Resolution Comparison

2012-09-27 Leica M Monochrom — Sharpness With Filters

2012-09-27 Zeiss 135mm f/2 APO Sonnar for Nikon and Canon — Superlative Performer

2012-09-13 Zeiss 135mm f/2 APO Sonnar MTF from f/2 - f/16

2012-08-31 Retina-resolution Images Now Deployed Here

2012-08-29 Sony RX100: Examples and Sharpness

2012-07-27 At Which Aperture Does Diffraction Degrade Olympus OM-D E-M5 Image Sharpness?

2012-07-24 Canon EOS 1D X vs 5D Mark III: Definitive Resolution Comparison

2012-07-13 Image Sharpness in Photoshop CS6 with/without the GPU Enabled

2012-06-19 Diglloyd.com Support Display of Large Images at MacBook Pro Retina Display Native Resolution

2012-05-22 Exploiting the Sensor Resolution: Depth of Field on the Nikon D800E

2012-05-21 Filtration for Leica M Monochrom to Improve Image Sharpness and Tonal Separation

2012-05-05 Thoughts on Moiré and DSLR Resolution and the Optical Low Pass Filter

2012-05-03 Nikon D800E vs Nikon D800 Sharpness and Sharpening

2012-04-13 Nikon D800 vs D3s Resolution

2012-04-08 Nikon D800 Quality at ISO 1100 when Downsampled to Nikon D3x, Canon 5D Mark III, Nikon D3s Resolution

2012-03-07 Diffraction, Sharpness and Nikon D800E

2012-02-09 My Reference Lenses For Testing Sharpness

2012-01-05 Sony NEX-7: Loss of Contrast and Resolution from Diffraction

2011

2011-11-05 Leica 21mm f/3.4 Super-Elmar-M— Outstanding Sharpness with Finesse

2011-07-16 Sigma DP2x Resolution

2011-01-14 Zeiss 35mm f/1.4 Distagon MTF, distortion, vignetting

2010

2010-11-25 Nikon 70-200mm f/2.8G VR II sharpness

2010-06-27 Nikon 14mm f/2.8 and 14-24mm f/2.8G — how to avoid losing half your resolution

2010-03-10 Lens rental perspective on lens quality aka MTF WTF

2010-02-12 MTF comments updated for Zeiss ZF / Zeiss ZE

2010-01-21 MaxMax.com Nikon D700 “HR” — high resolution mod

2009

2009-12-29 Resolution contest: Nikon D3x vs Nikon D3s

2009-12-26 Nikon D3s: limits of resolution

2009-07-27 Olympus E-P1 resolution

2009-04-08 Zeiss’ Dr. Nasse on MTF, part II

2009-01-09 Nikon D3 vs Nikon D3x resolution

2008

2008-12-26 D3x vs D3 resolution compared

2008-12-24 Nikon D3x resolution vs Canon 1Ds Mark III and D3

2008-12-08 Sony A900 vs Canon 1Ds Mark II resolution

2008-11-11 Focus shift on a resolution chart

2008-10-19 Real-world Sharpness II: D3/1DsM3 updated

2008-10-15 Nikon 70-200 VR sharpness workaround

2008-10-15 Real-world Sharpness II: D3/1DsM3 updated

2008-10-12 Real-world Sharpness II: Nikon D3 / Canon EOS 1Ds Mark III

2008-10-11 Real-world Sharpness: Nikon D3 / Canon EOS 1Ds Mark III

2008-07-07 Zeiss ZF 18mm f/3.5 Distagon MTF, Distortion, etc

2008-06-14 Resolution limits for digital SLRs

2008-04-30 The future of resolution, 36 megapixels?

2008-01-21 Zeiss white paper on MTF

2007

2007-12-15 Digital SLR resolution — the future

2007-12-13 Canon EOS 1Ds Mark III vs Nikon D3—resolution

2007-09-08 On sharpness, megapixels and lens testing