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Newest blog posts

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

2017-10-18 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

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

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

View all related blog posts...

Post Processing for Sharpness

Making image captures look sharp..

  1. Mitigating Micro Contrast Losses from Diffraction Blur

Field Curvature

Zone of focus, not plane of focus.

  1. 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

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

Medium telephoto tilt/shift macro focusing lens.

  1. MTF

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

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

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

Hartblei 40/80/120mm SuperRotators

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

  1. MTF for Hartblei 40mm f/4
  2. MTF for Hartblei 80mm f/2.8
  3. 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)

Fujifilm Finepix X100

The best compact big-sensor digital camera yet?.

  1. MTF Charts for Fujifilm X100

Ricoh GR

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

  1. Ricoh GR Lens MTF Analysis

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 85mm f/1.8 Sonnar

Autofocus portrait lens for Sony full-frame mirrorless..

  1. MTF for Zeiss Batis 85/1.8 Sonnar

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)

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 dp2 Quattro

45mm f/2.8 equivalent FOV lens..

  1. dp2 Quattro MTF

Fujifilm GF 23mm f/4 R WR

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

  1. Distortion Correction and Micro Contrast Losses

Hasselblad XCD 30mm f/3.5

25mm equivalent..

  1. MTF

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 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

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. 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. Field Curvature and MTF and Focus (Nikon D800E, Mosaic)

18mm f/3.5 Distagon

A brilliant, but also colorful character..

  1. MTF 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

28mm f/2 Distagon

An artist’s drawing tool..

  1. MTF 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

50mm f/1.4 Planar

Brilliant imaging in a compact package..

  1. MTF Chart

50mm f/2 Makro-Planar

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

  1. MTF Chart
  2. 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)

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

100mm f/2 Makro-Planar

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

  1. MTF 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)

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)

Hartblei 40/80/120mm SuperRotators

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

  1. MTF for Hartblei 40mm f/4
  2. MTF for Hartblei 80mm f/2.8
  3. MTF for Hartblei 120mm f/4

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

2018-09-07 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

2017-10-18 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

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

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

2016-11-10 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

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

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

2015-04-29 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

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

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

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

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

2013-10-08 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

2013-05-19 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)

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

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

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

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”)

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

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

2011

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

2010

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

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

2009

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

2008

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

2008-01-21 Zeiss white paper on MTF

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