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Sharpness and Blur by Optics

Blur from optical behavior or subject-related issue..

Ray Angle, Vignetting, Color Shading on a Digital Sensor

Evenness of illumination, color shading, digital sensor effects, ray angle..

Post Processing for Sharpness

Making image captures look sharp..

Depth of Field

Controlling the zone of sharp detail..

Understanding Modulation Transfer Function (MTF)

Understanding resolution and contrast graphs..

Optical Aberrations and Behaviors

Understanding the various optical aberrations and behaviors..

Vignetting (Field Illumination)

Evenness of illumination across the frame and related effects..

Spherical Aberration

Diffuse haze at wide apertures..

Astigmatism

Understanding astigmatism..

Lateral Chromatic Aberration

Understanding lateral chromatic aberration (color fringing)..

Longitudinal Chromatic Aberration

Understanding Longitudinal (Axial) chromatic aberration (LOCA)..

Secondary Longitudinal Chromatic Aberration

Secondary Longitudinal Chromatic Aberration (SLOCA)..

How to Test A Lens

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

Photoshop How-To

Working with Photoshop for raw conversion and more..

Nikon D800E

36 megapixels in a compact full-frame DSLR..

Canon EOS 5DS / 5DS R

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

Nikon AF-S 70-200mm f/4 ED VR and 70-200mm f/2.8 ED VR II

Which speed zoom for the Nikon D800/D800E?.

Nikon AF-S 70-200mm f/2.8G ED VR II

Nikon’s bread and butter telephoto zoom.

Canon EOS 5D Mark II review

Canon 5D Mark II impressions.

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..

Canon TS-E 17/4L

Ultra wide angle tilt shift with tremendous versatility.

Canon TS-E 24/3.5L II

Canon TS-E 24mm f/3.5L II.

Nikon 19mm f/4E ED PC-E

Ultra wide tilt/shift lens.

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..

Landscape Photography at Wide Apertures

Escape the banale postcard look by shooting landscapes at f/1.4 or f/0.95..

Pentax HD FA 15-30mm f/2.8 ED SDM WR

Full frame ultra wide angle zoom..

Pentax SMCP-FA 43mm f/1.9 Limited

Full frame slightly wide normal lens, pancake form factor..

Canon 100mm f/2.8L Macro IS

Canon 100mm f/2.8L Macro IS .

Canon 35mm f/1.4L II

Canon’s updated fast 35mm prime, evaluated on Canon 5DS R..

Sigma 24-35mm f/2 DG HSM Art

Mid-range optimized groundbreaking f/2 zoom..

Sigma 14mm f/1.8 DG HSM Art

A whopping 4/3 stop faster than other lenses in its range..

Sigma 20mm f/1.4 DG HSM Art

The fastest extreme wide angle yet..

Sigma 24mm f/1.4 DG HSM Art

Sigma’s fast high performance wide angle..

Sigma 35mm f/1.4 DG HSM Art

Sigma’s fast and affordable moderate excellent wide angle..

Sigma 40mm f/1.4 DG HSM Art

Extraordinary optical efforts for outstanding performance..

Sigma 50mm f/1.4 DG HSM Art

Sigma’s fast high performance normal lens..

Sigma 135mm f/1.8 DG HSM Art

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

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..

180mm Lenses for the Nikon D3x

Explores options for 180mm lenses on the Nikon D3x, including the Leica 180/2.8 APO-Elmarit-R in Nikon mount, Nikon 180/2.8 ED, Nikon 70-200/2.8 VR, Nikon 70-300/4.5-5.6 VR, and Tamron 70-200/2.8. Updated: now includes the Voigtlander 180/4 APO!.

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

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

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..

Nikon AF-S Nikkor 50mm f/1.8G

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

Nikon AF-S Nikkor 58mm f/1.4G

Nikon’s High performance normal lens.

Canon 24mm f/1.4L II

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

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

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

Nikon AF-S Nikkor 20mm f/1.8G

Nikon’s fast ultra wide angle..

Nikon AF-S Nikkor 24mm f/1.8G

Versatile autofocus wide angle..

Nikon AF-S 24mm f/1.4G ED

State of the art design in a fast 24mm lens. Includes full-resolution images at f/1.4..

Nikon AF-S 60mm f/2.8G Macro

Comparing the new Nikon 60mm to its predecessors, and the Coastal Optics 60/4 APO..

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

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

Canon 16-35mm f/4L IS

Canon’s compact image stabilized wide angle zoom..

Nikon AF-S 85mm f/1.4G

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

Nikon AF-S 105mm f/1.4E ED

Nikon’s best-ever f/1.4 lens?.

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..

Canon-Wide Angle Prime Lenses

Comparing the 16-35mm f/2.8L II to most of Canon’s wide angle prime lenses. Optical performance, ergonomics, focus, build quality..

Canon Ultra-wide Zoom Lenses: 17-40 and 16-35

Comparing the Canon 17-40mm f/4L and 16-35mm f/2.L II..

Nikon AF 16mm f/2.8D Fisheye

Exploring the 16mm fisheye for landscape photography, and correcting fisheye distortion..

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..

Hartblei 40/80/120mm SuperRotators

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

Samyang 14mm f/2.8

Ultra wide angle lens for Canon and Nikon..

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

Bread and butter all-around zoom..

Sony Alpha A7R II

Attention to details: a big upgrade over the A7R..

Sony Alpha A7R

Full frame compact mirrorless with interchangeable lenses..

Sony FE 28mm f/2

Fast wide angle..

Sony FE 35mm f/2.8 ZA Sonnar

Compact moderate wide angle for Sony mirrorless..

Voigtlander FE Super Wide-Heliar 15mm f/4.5 Aspherical III

Ultra wide native mount manual focus lens for Sony mirrorless..

Sony FE 12-24mm f/4 G

Extreme wide angle zoom..

Sony FE 16-35mm f/4 ZA OSS Vario-Tessar

Comapact ultra-wide zoom for Sony full frame mirrorless..

Sony FE 24-70mm f/2.8 GM

Premiere mid-range zoom for Sony full frame mirrorless.

Sony FE 24-105mm f/4 G OSS

Wide angle to telephoto zoom with optical stabilization..

Sony FE 24-70mm f/4 OSS Vario-Tessar

Comapact mid-range zoom for Sony full frame mirrorless.

Sony FE 70-200mm f/2.8 GM OSS

Premiere telephoto zoom for Sony full frame mirrorless.

Venus Optics Laowa 12mm f/2.8 Zero-D

Extreme wide angle with 'zero distortion'..

Venus Optics Laowa 15mm f/4 Macro

Extreme wide angle macro lens for Sony mirrorless..

Venus Optics Laowa 105mm f/2 STF

Manual focus apodized lens for ultra smooth focus..

Fujifilm Finepix X100

The best compact big-sensor digital camera yet?.

Sony Cybershot RX1R II

Diminutive full-frame camera with 35mm f/2 fixed lens..

Sony Cybershot DSC-RX1 / RX1R

Full frame camera in an ultra-compact body with or without anti-aliasing filter..

Sony DSC-RX100

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

Sigma DN 19mm f/2.8

Wide angle for Micro Four Thirds or Sony E Mount/NEX..

Venus Optics Laowa 7.5mm f/2 fisheye

Rectilinear fisheye lens for Micro Four Thirds..

Zeiss Loxia 21mm f/2.8 Distagon

Outstanding ultra wide angle performer..

Zeiss Loxia 25mm f/2.4 Distagon

Outstanding wide angle, superb performer..

Zeiss Loxia 35mm f/2 Biogon

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

Zeiss Loxia 50mm f/2 Planar

Manual focus normal lens for full-frame mirrorless..

Zeiss Loxia 85mm f/2.4 Sonnar

Manual focus telephoto lens for full-frame mirrorless..

Zeiss Batis 18mm f/2.8 Distagon

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

Zeiss Batis 25mm f/2 Distagon

Autofocus wide angle for Sony full-frame mirrorless..

Zeiss Batis 40mm f/2

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

Zeiss Batis 85mm f/1.8 Sonnar

Autofocus portrait lens for Sony full-frame mirrorless..

Zeiss Batis 135mm f/2.8 APO-Sonnar

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

Zeiss Touit 12mm f/2.8 Distagon

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

Zeiss Touit 32mm f/1.8 Planar

Normal lens for Sony NEX or Fujifilm X..

Sigma Photo Pro Software 5.x

Sigma’s raw file processing software, version 5.x..

Sigma dp2 Quattro

45mm f/2.8 equivalent FOV lens..

Fujifilm GF 23mm f/4 R WR

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

Fujifilm GF 63mm f/2.8 R WR

Standard normal lens equivalent to 52mm f/2.3..

Hasselblad XCD 30mm f/3.5

25mm equivalent..

Hasselblad XCD 45mm f/3.5

37mm equivalent..

Hasselblad XCD 90mm f/3.2

Medium format telephoto lens, 74mm equivalent..

Hasselblad XCD 120mm f/3.5

Telephoto macro lens, 99mm equivalent..

Pentax 645Z Overall

50-Megapixel Medium Format DSLR with Live View.

Pentax SMC DA 645 25mm f/4 AL (IF) SDM AW

Ultra wide angle lens for Pentax 645..

Hasselblad H4D 50 Megapixel Medium Format DSLR

How does Hasselblad’s 3rd generation medium format entry measure up?.

Leica S2 37.5 Megapixel Medium Format DSLR

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

Leica S Examples

Examples and comparison from the various lenses.

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

Extreme wide angle with ultra high performance..

Leica 45mm f/2.8 Elmarit-S ASPH

Moderate wide angle with low distortion..

Leica 100mm f/2 Summicron-S ASPH

The fastest S lens..

Cameras and Examples

Infrared camera choices with examples.

Shooting Considerations

All about shooting in infrared..

Wrap-up and Summary

Conclusions and where to find products and additional information..

Milvus 15mm f/2.8

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

Milvus 18mm f/2.8

An outstanding 18mm design..

Milvus 21mm f/2.8

The classic 21/2.8 Distagon improved..

Milvus 25mm f/1.4

Highest performing 25mm from Zeiss ever..

Milvus 35mm f/1.4

Highest performing 35mm from Zeiss ever..

Milvus 35mm f/2

Classic design in the latest Milvus build..

Milvus 50mm f/1.4

Outstanding build and optical quality in a normal lens..

Milvus 50mm f/2M

The classic 50/2 Makro-Planar improved..

Milvus 85mm f/1.4

Outstanding build and optical quality in a medium tele..

Milvus 100mm f/2M

The classic 100/2 Makro-Planar improved..

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..

15mm f/2.8 Distagon

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

18mm f/3.5 Distagon

A brilliant, but also colorful character..

21mm f/2.8 Distagon

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

25mm f/2 Distagon

Ultra high performance with a fast aperture..

25mm f/2.8 Distagon

A gem with unusual close-focus..

28mm f/2 Distagon

An artist’s drawing tool..

35mm f/1.4 Distagon

Strokes of a master..

50mm f/1.4 Planar

Brilliant imaging in a compact package..

50mm f/2 Makro-Planar

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

Otus 28mm f/1.4 APO-Distagon

Fast high performance APO wide angle..

Otus 55mm f/1.4 APO-Distagon

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

Otus 85mm f/1.4 APO-Planar

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

85mm f/1.4 Planar

True-to-life imagery..

100mm f/2 Makro-Planar

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

135mm f/2 APO-Sonnar

Beautiful bokeh, razor sharp, superb color correction..

Conclusions

Summary and wrap-up..

Binoculars

What to look for in a binocular, plus reviews..

Understanding optics

Understanding lens performance..

Subjective Lens Qualities

Also known as shading..

Misc Reviews

Miscellaneous reviews..

Lens and Camera Issues

Good stuff and not so good stuff..

Brand-new Blur

Blurry lenses right out of the box..

Ask Lloyd Chambers

Questions and answers on photography and computers and more..

Photo Tips

Photography Hints and Tips..

Overview of Zeiss Touit Lenses

High performance prime lenses for Sony NEX and Fujifilm X..

Viewfinder and LCD Viewing Aids

Accurate focus and ease for your eyes..

Zeiss ZF.2 and Zeiss ZE Lenses For Canon and Nikon

Zeiss ZF.2 and Zeiss ZE Lenses For Canon and Nikon.

15mm f/2.8 Distagon Zeiss Interview

Q&A on the 15/2.8 Distagon with Dr. Hubert Nasse.

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

A reference lens for color correction..

Hartblei 40/80/120mm SuperRotators

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

Leica S2 37.5 Medium Format DSLR

Leica S2 37.5 megapixel DSLR and its lenses..

Lenses for Leica M8, Leica M9, M*

Lenses for Leica M cameras, especially the M9.

Leica M Typ 240 With Alternate Lenses

With Live View and EVF, non-M-mount lenses become feasible..

Leica SL Typ 601

24-megapixel interchangeable lenses, high-res EVF..

Leica 24-90mm f/2.8-4 Vario-Elmarit-SL ASPH OIS

All-arounder zoom with dubious optical compromises..

Leica Q (Typ 116)

24-megapixel fixed lens compact full-frame..

Ray angle and Color Shading With M Lenses

Off-center color casts, off-center sharpness..

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

Leica’s ultra wide angle zoom lens..

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

Leica’s widest prime lens..

Leica 21mm f/1.4 Summilux-M ASPH

Leica’s fastest and widest lens..

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

Leica’s best-performing 21mm..

Leica 24mm f/1.4 Summilux-M ASPH

Leica’s fast wide angle..

Leica 24mm f/3.8 Elmar-M ASPH

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

Leica 28mm f/1.4 Summilux-M ASPH

Leica’s fast 28mm..

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

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

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

Tweaked 2016 redesign..

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

Tweaked 2016 redesign of Leica’s petite performer..

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

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

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

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

Leica 35mm f/2 Summicron-M ASPH

Leica’s f/2 35mm for the M..

Leica 35mm f/2.5 Summarit-M

Leica’s Budget 35mm lens..

Leica 50mm f/0.95 Noctilux-M ASPH

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

Leica 50mm f/1.4 Summilux-M ASPH

Leica’s superlative normal lens..

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

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

Leica 50mm f/2 Summicron-M

Leica’s compact low-distortion normal lens..

Leica 50mm f/2.5 Summarit-M

Leica’s Budget 50mm lens..

Leica 75mm f/1.25 Noctilux-M ASPH

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

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

Leica’s medium tele for Leica M..

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

Leica’s budget 75mm medium telephoto..

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

Leica’s longer tele for Leica M..

Leica 90mm f/2.2 Thambar-M

Leica’s retro telephoto..

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

Leica’s compact 90mm for the M..

Leica 90mm f/4 Macro-Elmar-M

Diminutive telephoto and macro lens..

Leica 135mm f/3.4 APO-Telyt-M

Leica’s longest M lens..

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

Compact lens for portraiture or similar..

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

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

Leica 180mm f/2.8 APO-Elmarit-R

World’s best mid-range telephoto lens..

Leica 280mm f/4 APO-Telyt-R

Compact and ultra high performance long telephoto..

Zeiss ZM 15mm f/2.8 Distagon

Notes and examples..

Zeiss ZM 18mm f/4 Distagon

Compact high performance, ultra low distortion..

Zeiss ZM 21mm f/2.8 Biogon

Moderate speed high contrast ultra-wide..

Zeiss ZM 21mm f/4.5 C-Biogon

Zero distortion ultra-wide..

Zeiss ZM 25mm f/2.8 Biogon

Compact wide angle with brilliant contrast..

Zeiss ZM 28mm f/2.8 C-Biogon

Compact wide angle..

Zeiss ZM 35mm f/1.4 Distagon

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

Zeiss ZM 35mm f/2 Biogon

All around razor sharp performer..

Zeiss ZM 35mm f/2.8 C-Biogon

Ultra compact high performance moderate wide angle rangefinder lens..

Zeiss ZM 50mm f/2 Planar

Pleasing and relatively inexpensive normal lens.

Zeiss ZM 85mm f/2 Sonnar

Ultra high performance (discontinued).

Zeiss ZM 85mm f/4 Tele-Tessar

Compact high performance medium telephoto..


Blog posts, reverse chronological

2018

2018-10-31 Coastal Optics 60mm f/4 UV-VIS-IR APO-Macro Aperture Series (Many), on Nikon Z7

2018-10-30 Nikon Z7 Captures Incredible 45-Megapixels of Chromatically Perfect Detail with Coastal Optics 60mm f/4 UV-VIS-IR APO-Macro

2018-10-17 Canon RF 24-105mm f/4L IS Color Fringing (Lateral Chromatic Aberration) with/without Correction

2018-09-27 Zeiss Batis 40mm f/2: Data Sheets Continue to Omit Optical Distortion, Showing Only Corrected Distortion

2018-08-24 Comments on Nikon Z7 Features

2018-07-11 Reader Question: Color Rendition of Lenses

2018-07-06 Reader Question on Vignetting for Zeiss Loxia 50mm f/2 Planar

2018-05-21 Venus Optics Laowa 105mm f/2 STF Aperture Series: Storm Clouds Over Kolob Canyons Peaks (Sony A7R III)

2018-03-13 Venus Optics Laowa 12mm f/2.8 Zero-D: Three Aperture Series + Distortion Explained

2018-02-22 Venus Optics Laowa 12mm f/2.8 Zero-D Aperture Series: Milling Lathe

2018-02-14 Lenses Coming for Review for Sony Mirrorless

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

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

2017-10-06 Sigma 14mm f/1.8 DG HSM Art Aperture Series: Precocious Cluster of Yellow Aspen Leaves

2017-07-24 The Logjam Breaks: Nikon Discusses the D850

2017-07-23 Sony 12-24mm f/4G Distortion: Uncorrected vs Corrected

2017-04-11 Fujifilm GF 63mm f/2.8 Distortion Example

2016

2016-06-20 Leica SL vs M240: Lens Corrections and Color Rendering with M Lenses

2016-04-26 Sony G Master 24-70mm f/2.8 GM Distortion Examples, Uncorrected vs Corrected

2016-04-20 Optical Distortion: Zeiss Batis 18mm f/2.8 and Voigtlander 15mm f/4.5 for Sony Mirrorless

2016-04-14 Zeiss Batis 18mm f/2.8 Distagon: Data Sheet Confusing Because Distortion Graph is Software-Corrected (only)

2016-01-29 Examples: Venus Optics Laowa 15mm f/4 Macro on Sony A7R II

2016-01-22 Reader Question: Lenses for Wide Angle Macro

2016-01-01 Sony RX1R II Distortion

2015

2015-12-20 Sigma 20mm f/1.4 DG HSM Art Aperture Series: Distortion examples, Uncorrected and Corrected

2015-09-17 King of Bokeh, well-controlled SLOCA?

2015-09-16 Leica 28mm f/1.4 Summilux-M ASPH: Analysis/Example of SLOCA (Secondary Longitudinal Chromatic Aberration)

2015-09-13 On Secondary Color: Collective Context-Dropping regarding Zeiss Milvus 50/1.4 Distagon

2015-08-30 Sony A7R II: Night Shooting (Coastal Optics 60mm f/4 UV-VIS-IR APO Macro)

2015-08-29 Coastal Optics 60mm f/4 UV-VIS-IR APO Macro Aperture Series (Sony A7R II)

2015-08-26 Announced: Canon 35mm f/1.4L II

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

2015-05-27 Sony: Which Lens Corrections are Baked Into the Raw ARW File?

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

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

2015-04-09 Table of f-stops: Full Stops, 1/2 Stops, 1/3 Stops (Depth of Field)

2015-03-27 Sigma 24mm f/1.4 DG HSM Art: Vignetting and Distortion

2015-03-16 Manzanar (WW II Relocation Camp for Japanese Americans)

2014

2014-11-29 Sony FE 16-35mm f/4: Distortion at 16mm, 20/21mm, 24mm, 28mm, 35mm

2014-10-15 Nikon 20mm f/1.8G ED: Distortion

2014-07-11 B&H Photo Now Offers Free Expedited Shipping (1/2/3 days depending on location)

2014-06-10 Zeiss ZF.2 / ZE Distortion: 15/2.8, 18/3.5, 21/2.8 Distagons

2014-06-07 Sigma 50mm f/1.4 DG HSM: Discussing Optical and Autofocus Expectations, LOCA

2014-05-30 Nikon 58mm f/1.4G: Distortion Uncorrected and Corrected

2014-05-25 Format Equivalent Depth of Field: APS-C vs Full Frame

2014-05-19 Format Equivalent Depth of Field: a Non-Alcoholic Demonstration (Micro Four Thirds vs Full Frame)

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

2014-04-09 Color Shading (Vignetting by Color) on Digital Sensors

2014-04-08 Color Correction (LOCA, Secondary LOCA, LACA)

2014-04-06 Coastal Optics 60mm f/4 UV-VIS-IR APO Macro Aperture Series (Metal Watering Can, Sony A7R)

2014-04-06 Coastal Optics 60mm f/4 UV-VIS-IR APO Macro Aperture Series (Poppies and Pots, Sony A7R)

2014-04-06 Coastal Optics 60mm f/4 UV-VIS-IR APO Macro Aperture Series (Teak Bench, Sony A7R)

2014-03-31 Secondary Color Correction with Leica 90/2 APO, Zeiss ZM 85mm f/4 Tele-Tessar, ZM 85/2 Sonnar: Barn Interior (Leica M240)

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

2014-03-18 Astigmatism and Lateral Color: Why Performance is Lens + Sensor (aka why do my expensive lenses suck on mirrorless)

2014-02-16 Sony FE 24-70mm f/4 OSS Vario-Tessar: Aperture Series at 43mm, 70mm + Distortion and Color Fringing at 43mm, 70mm

2014-02-10 Sony FE 24-70mm f/4 OSS Vario-Tessar: Distortion and Color Fringing at 24mm

2013

2013-12-06 Sony A7R: Shading, Color Shading and Lens Compensation

2013-09-06 Samyang 14mm f/2.8: Lens Skew Asymmetry

2013-09-03 Sony RX1R: Correcting Lens Distortion

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)

2013-05-11 Zeiss Touit 32mm f/1.8 Planar: Correcting Distortion in Adobe Camera Raw

2013-05-10 Zeiss Touit 12mm f/2.8 Distagon: Distortion Correction in JPEG, vs RAW

2013-05-10 Zeiss Touit 32mm f/1.8 Planar: Distortion Correction in JPEG, vs RAW

2013-05-04 Lens Corrections for Native Lenses on Sony NEX and Fuji X

2013-04-22 Leica M Typ 240: Done For Now

2013-04-17 Leica M Typ 240 / M240 with Coastal Optics 60mm f/4 UV-VIS-IR APO Macro

2013-04-15 Coastal Optics 60mm f/4 UV-VIS-IR APO-Macro on Leica M Typ 240 / M240 [using Novoflex Nikon to M Adapter]

2013-01-14 Metabones Speed Booster — Comments from the Designer

2013-01-14 Metabones and Caldwell Photographic introduce Speed Booster

2012

2012-12-15 Sony RX1: Aperture Series, Distortion Correction

2012-12-11 Nikon 70-200mm f/4G ED VR Distortion

2012-10-26 DxO Optics Pro Support for Retina Display

2012-10-22 DxO Optics Pro Coverage

2012-10-14 Sigma DP1 Merrill — Correcting Lateral Chromatic Aberration

2012-09-11 New Article in Workflow: Local Contrast enhancement

2012-09-09 Sony RX100: Adobe Camera RAW 7.2 RC Distortion Correction = FORCED ON

2012-07-16 Understanding Longitudinal Chromatic Aberration with the Zeiss 100mm f/2 Makro-Planar

2012-06-16 Nikon D4 Video Quality = Awful

2012-04-07 Reader Asks: Coastal Optics 60mm f/4 UV-VIS-IR APO-macro vs Zeiss 50mm f/2 Makro-Planar

2012-02-09 Reader Comments: “how a lens draws” — Leica vs Zeiss/Nikon/Canon/Pentax

2012-01-23 Color Shading & Vignetting for Leica 28mm f/2.8 Elmarit-M ASPH and 50mm f/0.95 Noctilux-M ASPH

2012-01-23 Q&A Interview with Leica USA

2012-01-23 Sony NEX-7 Color Shading & Vignetting vs Sony 24mm f/1.8 Sonnar

2012-01-23 Why no Custom Lens Correction on Leica M9?

2012-01-09 Leica M9: Color Shading for 12 Lenses With/Without Lens Correction

2011

2011-12-13 Adobe Camera Raw (ACR) Always Corrects Distortion With Some Cameras

2011-12-01 Reader Asks: Is There Zeiss 35mm f/1.4 Lateral Chromatic Aberration?

2011-11-18 Lateral Chromatic Aberration: Nikon 24mm f/1.4G

2011-06-04 Fuji Finepix X100 — Lens Distortion

2011-04-04 Lateral Chromatic Aberration (Color Fringing) With Zeiss 35/1.4 Distagon vs Zeiss 35/2 Distagon

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

2010

2010-07-26 Update: axial chromatic aberration and filtration

2010-07-25 Leica S2: axial chromatic aberration with Leica 70mm f/2.5 Summarit-S ASPH

2010-07-08 Hasselblad user examines Leica S2 pre-review coverage

2010-05-20 Global cooling? Local at least.

2009

2009-10-12 Carl Zeiss on lens distortion

2009-09-11 Canon TS-E 24/3.5L II distortion

2009-02-15 Canon 5D Mark II Live View vignetting

2009-01-09 Nikon D3 vs Nikon D3x resolution

2008

2008-08-19 Multi-core CPU usage of DXO Optics PRo

2008-08-14 Vignetting Control in Nikon Capture NX 2 (24-70)

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

2008-06-14 New article on vignetting

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

2008-04-06 Sheer magic

2008-04-03 Coastal Optics 60mm f/4 UV-VIS-IR APO Macro

2008-03-30 Atmospheric distortion

2008-03-27 Digital artifacts

2008-02-15 Lens distortion

2008-01-23 Coastal Optics 60/4 APO macro in color

2008-01-18 Coastal Optics 60mm f/4 UV/VIS/IR APO macro (more)

2008-01-16 Coastal Optics 60mm f/4 UV/VIS/IR APO macro

2007

2007-11-08 Coastal Optics UV-VISIBLE-IR 60mm f/4 APO Macro

2007-09-28 Zeiss 100mm f/2 Makro-Planar “ARRI” optics

2007-07-08 Zeiss 100mm f/2 Makro-Planar — best of the best

2007-07-04 Shooting stars followup

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