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Choosing Equipment

How to choose a camera, lenses, and the other stuff that’s worthwhile..

How to Test A Lens

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

Workflow Tips and technique

An introduction to digital workflow and best practices..

Sigma SD1 Merrill

Sigma/Foveon true-color sensor in a DSLR body..

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 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..

Special Report: Nikon AF-S VR Zoom-Nikkor 70-200mm f/2.8G ED-IF

Evaluates performance of the Nikon 70-200mm f/2.8 VR on the Nikon D3. Comparison with the Nikon 180mm f/2.8D ED-IF..

Voigtlander 20mm f/3.5 Color-Skopar

Very compact ultra wide angle..

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.

Shift Lenses for Nikon and Canon

[Older material, but still relevant]. Shift lens performance of Nikon/Canon/Schneider/Olympus on various cameras..

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..

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 TC III

Do Canon’s 1.4X and 2X version III tele extenders offer image quality at reasonable apertures?.

Canon 100mm f/2.8L Macro IS

Canon 100mm f/2.8L Macro IS .

Canon 35mm f/2 IS

Canon’s image stabilized 35mm..

Canon 200-400mm f/4L IS

Canon’s versatile super telephoto..

Sigma 12-24mm f/4 DG HSM Art

Fast constant-aperture ultrawide zoom..

Sigma 24-35mm f/2 DG HSM Art

Mid-range optimized groundbreaking f/2 zoom..

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 50mm f/1.4 DG HSM Art

Sigma’s fast high performance normal lens..

Sigma 85mm f/1.4 DG HSM Art

Sigma’s best portrait lens..

Sigma 135mm f/1.8 DG HSM Art

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

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 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-S Nikkor 20mm f/1.8G

Nikon’s fast ultra wide angle..

Nikon AF-S Nikkor 24-70mm f/2.8E ED VR

Versatile image-stabilized mid-range zoom..

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..

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..

Canon 24-70mm f/2.8L II and 24-70mm f/4L IS

Canon’s premium mid-range zooms..

Nikon AF-S 35mm f/1.4G

State of the art design in a fast 35mm lens..

Nikon AF-S 85mm f/1.4G

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

Nikon AF-S 200-500mm f/5.6E ED VR

Relatively compact super-telephoto zoom..

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 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..

Samyang 14mm f/2.8

Ultra wide angle lens for Canon and Nikon..

Nikon 24mm Lens Choices

Options for a 24mm lens: Nikon 14-24/2.8G, Nikon 24-70/2.8G, Nikon 24/2 AI-S, Nikon PC-E 24/3.5. Sharpness, distortion, flare, field curvature, shooting impression and ergonomics..

Sony Alpha A7R III

Attention to details: a solid upgrade over the A7R II..

Sony Alpha A7R

Full frame compact mirrorless with interchangeable lenses..

Sony FE 28mm f/2

Fast wide angle..

Sony Planar T* FE 50mm f/1.4 ZA

Fast high performance normal lens of Zeiss design..

Sony FE 35mm f/2.8 ZA Sonnar

Compact moderate wide angle for Sony mirrorless..

Sony 90mm f/2.8 Macro G OSS

Native-mount macro length designed by Zeiss..

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

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

Voigtlander FE Nokton 40mm f/1.2 Aspherical

Fast lens speed for versatile rendering..

Voigtlander FE 65mm f/2 Macro APO-Lanthar Aspherical

Ultra high grade performer at a modest price..

Sony FE 12-24mm f/4 G

Extreme wide angle zoom..

Sony FE 16-35mm f/2.8 GM

Pro-grade f/2.8 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 PZ 28-135mm f/4G OSS

Wide mid-range zoom targeted at video shooters..

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

Comapact mid-range 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..

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..

Olympus M.Zuiko 7-14mm f/2.8 PRO

Wide angle zoom equivalent (14-28mm equivalent)..

Olympus M.Zuiko 17mm f/1.8

A fast moderate wide angle..

Olympus OM-D E-M1

A worthy upddate to the E-M5 with pro-grade build quality..

Olympus OM-D E-M5

Superb ergonomic design in a compact camera..

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..

Fujifilm X-Pro2

Fujifilm's 24MP APS-C offering..

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 85mm f/1.8 Sonnar

Autofocus portrait lens 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 dp2 Quattro

45mm f/2.8 equivalent FOV lens..

Sigma DP2 Merrill

45mm f/2.8 equivalent lens on APS-C sensor..

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 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?.

Lenses

Lenses for the Leica S2 (original Leica S2 material).

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..

9. 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..

Introduction

Start here to best utilize this guide..

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..

35mm f/2 Distagon

Balance and poise..

50mm f/1.4 Planar

Brilliant imaging in a compact package..

50/1.4 Planar vs 50/2 Makro-Planar

Comparing the two 50mm options near and far, more comparisons coming..

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..

Zeiss LensSpire Articles

Articles written for Lenspire.ZEISS.com..

Understanding optics

Understanding lens performance..

Photo Tips

Photography Hints and Tips..

Overview of Zeiss Touit Lenses

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

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..

Canon lenses

Overview and assessments of Canon lenses.

Lenses for Leica M8, Leica M9, M*

Lenses for Leica M cameras, especially the M9.

Nikon D200 vs D2x

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

Leica M Typ 240 Compared To Full Frame Cameras

Relative sharpness and performance across cameras..

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..

Considerations in choosing a lens.

Focal lengths, color, weight and travel considerations. [relevant, but dated/old material].

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/2.8 Elmarit-M ASPH

A discontinued but excellent 24mm..

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 M 50mm Lenses

Six models to choose from..

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

2018

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

2018-01-28 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

2018-01-20 Working on Sony FE 24-105mm f/4 G OSS

2017

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

2017-07-24 Sony 12-24mm f/4G Aperture Series @ 12mm: Pescadero Creek, Upstream (Sony A7R II)

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

2017-07-11 Sony FE 12-24mm f/4 G: Aperture Series at 17mm and 24mm (Mosaic)

2017-07-10 Sony FE 12-24mm f/4 G: Aperture Series at 12mm (Mosaic)

2017-07-07 Sony FE 12-24mm f/4 G: Might Have Serious Drawbacks

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

2016

2016-12-18 Zeiss Milvus 18mm f/2.8 Aperture Series: Frosty Wood Round

2016-12-15 Reader Comments: Stitching and Panoramas

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

2016-09-19 Sigma 12-24mm f/4 DG HSM Art in Nikon, Canon, Sigma SA Mount

2016-09-15 Zeiss Announces Loxia 85mm f/2.4 for Sony Mirrorless

2016-09-08 Zeiss Announces ALL NEW Milvus 18mm f/2.8 for Nikon and Canon DSLRs

2016-06-17 Leica SL a Replacement for M240 when Shooting M lenses?

2016-05-12 Reviewed: Voigtlander Super Wide-Heliar 15mm f/4.5 Aspherical III for Sony E: Aperture Series from f/4.5 - f/11: Mosaic

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 REVIEWED in Depth: the NEW Zeiss Batis 18mm f/2.8 Distagon

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

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

2015-10-22 The Irrational Aim of f/1.4 Lenses

2015-07-19 Leica Q: Really not a 24MP Camera and not a 28mm Lens (in effect)

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

2015-06-13 Sony FE 28mm f/2 Aperture Series: Gnarled Stump in Snowstorm, Hoover Wilderness (Sony A7R)

2015-06-10 Announced: Sony RX10 Mark II, Sony RX100 Mark IV

2015-05-26 Sony FE 28mm f/2 Aperture Series: Knobby Boulder in Creek (Sony A7R)

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

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

2015-02-05 Canon 11-24mm f/4L USM Ultra Wide Zoom

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

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

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

2014-04-10 Sigma 50mm f/1.4 DG HSM 'Art' (for Canon, Nikon, etc)

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

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

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

2014-01-06 Sigma 50mm f/1.4 DG HSM 'Art' (for Canon, Nikon, etc)

2013

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

2013-02-23 On the Way: Zeiss 135mm f/2 APO Sonnar

2012

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

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

2012-10-08 Zeiss UP Line of Ultra Performance Lenses for Nikon and Canon

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

2012-09-09 Sony RX100: DXO Optics Pro vs ACR

2012-03-16 New ZEISS 15mm f/2.8 Distagon T* Ultra Wide Angle Lens

2011

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

2011-11-01 Leica 21mm f/3.4 Super-Elmar-M ASPH for Leica M9 On The Way For Testing

2011-10-27 Leica 30mm f/2.8 Elmarit-S ASPH for Leica S2 Medium Format

2011-10-26 Zeiss 25mm f/2 Distagon Announced

2011-06-21 Leica 21mm f/3.4 Super-Elmar-M ASPH

2011-06-04 Fuji Finepix X100 — Lens Distortion

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

2010

2010-11-13 Nikon 24-120mm f/4G VR comments

2009

2009-12-09 Carl Zeiss announces Zeiss ZE 50mm f/2 and Zeiss ZE 100mm f/2 Makro-Planar for Canon EOS

2009-10-12 Carl Zeiss on lens distortion

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

2008

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

2008-03-30 Atmospheric distortion

2008-02-15 Lens distortion

2007

2007-09-17 Zeiss ZF 28mm f/2 Distagon announced

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