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Focus Shift and Spherical Aberration

Elusive sharpness, depending on aperture.

How to Test A Lens

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

Nikon D800E

36 megapixels in a compact full-frame DSLR..

Canon 35mm f/1.4L II

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

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 105mm f/1.4 DG HSM Art

Extraordinary optical efforts for class-leading performance?.

Nikon AF-S 28mm f/1.8G

A fast moderate wide angle lens with some practical difficulties..

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..

Schneider Kreuznach LS 150mm f/2.8 IF

Medium telephoto 100mm equivalent for Phase One XF system.

Fujifilm GF 110mm f/2 R WR

Ultra high speed telephoto equivalent to 90mm f/1.6..

Pentax 645Z Overall

50-Megapixel Medium Format DSLR with Live View.

Pentax 645Z Image Quality

High end image quality, but what about lenses?.

Dell 4K UltraHD UP2414Q

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

Nikon lenses

Overview and assessments of Nikon lenses.

Nikon NIKKOR Z 50mm f/1.8 S

Normal lens expressly designed for Nikon Z cameras..

Sony A1 Setup and Configuration

Menus, buttons, customization..

Sony A1 Eye AF

Eye autofocus with humans, animals, birds..

Sony Alpha A7R II

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

Sony Alpha A7R Shutter Vibration

Vibration from the shutter highly damaging to image sharpness..

Sony Alpha A7 II

Sensor stabilized 24MP full-frame..

Sony FE 35mm f/1.4 Distagon ZA

Fast and gorgeous moderate wide angle Zeiss design..

Sony FE 50mm f/1.2 GM

High performance, high speed..

Sony FE 55mm f/1.8 ZA Sonnar

Compact normal lens for full-frame Sony mirrorless..

Sony FE 85mm f/1.4 GM

Top-grade medium telephoto..

Sony FE 100mm f/2.8 STF GM

Razor sharp medium telephoto with apodization filter..

Sony FE 135mm f/1.4 GM

Top-grade telephoto..

Sigma FE 85mm f/1.4 DG DN Art

Ultra high performance medium telephoto..

Fujifilm Finepix X100

The best compact big-sensor digital camera yet?.

Ricoh GR

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

Sony Cybershot DSC-RX1 / RX1R

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


Stunningly high image quality in a 20MP point and wide range zoom..

Fujifilm X-Pro2

Fujifilm's 24MP APS-C offering..

Fujifilm XF 90mm f/2 R LM WR

Medium-long fast telephoto..

Sony NEX-7 and NEX-5N

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

Zeiss 24mm f/1.8 for Sony NEX

Moderate wide angle for Sony NEX..

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 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 DP1 Merrill

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

Sigma DP3 Merrill

75mm f/2.8 equivalent lens on APS-C sensor..

Blog posts, reverse chronological


2021-10-17 NEW: Voigtlander M 90mm f/2.8 APO-Skopar for Leica M, and Voigtlander 90mm f/2.8 APO-Skopar SL IIs for Nikon F-Mount


2019-05-21 Leica 90mm f/2 APO-Summicron-SL ASPH Examples: Portraits using Panasonic S1R Eye AF

2019-05-15 Panasonic Lumix S PRO 50mm f/1.4 Portrait Examples (Panasonic S1R)

2019-05-15 Leica 50mm f/1.4 Summilux-SL ASPH Portrait Examples (Panasonic S1R)

2019-05-13 Sony 135mm f/1.8 GM Portrait Examples (Sony A7R III)

2019-05-04 Leica 50mm f/1.4 Summilux-SL ASPH Examples with Panasonic S1R Eye AF: Portraits

2019-04-30 Zeiss Otus 100mm f/1.4 APO-Sonnar: Portrait Example (Nikon D850)

2019-04-08 Zeiss ZM 35mm f/1.4 Distagon on Panasonic S1R: Evaluating Applicability for Environmental Portraiture

2019-04-08 Leica 50mm f/1.4 Summilux-M ASPH on Panasonic S1R: Evaluating Applicability for Environmental Portraiture

2019-04-08 Leica 28mm f/2 Summicron-M ASPH on Panasonic S1R: Evaluating Applicability for Environmental Portraiture

2019-02-04 Sigma 40mm f/1.4 DG HSM Art Examples: Lundy Canyon Portraits (Nikon D850)


2018-11-03 Reader Question: Nikon Z7 or Canon EOS R for Portraits?

2018-09-21 Zeiss Loxia 35mm f/2 Biogon: its Point Spread Function, and Why a Classic Balanced Optical Performance Might be Just Right

2018-09-19 Compared: Sony 85mm f/1.4 GM vs Zeiss Loxia 85mm f/2.4: Portraits at Tenaya Pool

2018-07-06 Sigma 105mm f/1.4 DG HSM Art for Portraits (UPDATED with examples now published)

2018-05-16 Zeiss Loxia 25mm f/2.4 Aperture Series: Portraits at Kolob Canyons


2017-04-21 Sony FE 100mm f/2.8 STF GM OSS — Portraits


2016-05-07 Sony 85mm f/1.4 GM Examples: Portraits With Commentary

2016-03-26 Fujifilm X-Pro2: RAW vs JPEG SHOOTOUT (Portrait Among the Flowers)


2015-08-19 Sony A7R II: Posterization with a Near Optimal Exposure in Daylight (Portrait at Dana Lake)

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

2015-05-23 Zeiss Batis 25mm f/2 Distagon and Zeiss Batis 85mm f/1.8 Sonnar: First Look, Portraits

2015-04-07 Sony FE 35mm f/1.4 Distagon: the First Lens that 'Makes' the Platform


2014-12-27 Sony A7 II and Sony 55/1.8: Assesssing Image Stabilization at 1/15 and 1/20 second, and 1/5 + 1/6 second

2014-09-08 Uber Lens: Zeiss Otus 85mm f/1.4 APO-Planar offers Unprecedented Performance

2014-07-08 Pentax 645z: Handheld Portraits with the Pentax 90mm f/2.8

2014-06-30 Sigma dp2 Quattro: Portraits


2013-12-15 Sony A7R: Shutter Vibration at 180mm in Portrait Orientation

2013-09-22 Sigma DP3 Merrill: Natural Light Portraits in Ultra HD

2013-09-20 Catchlights in Eyes in Portraits (National Geographic)

2013-08-06 Ricoh GR: Close Range Portraits

2013-07-05 Ricoh GR: Some Key Examples

2013-07-02 Ricoh GR Digital: White Balance and Tint (Portrait)

2013-05-16 Zeiss Touit 32mm f/1.8 Planar: Portraiture in NYC

2013-05-16 Zeiss Touit 12mm f/2.8 Distagon: Portraiture with an Ultra Wide Angle

2013-03-11 Portraits with the Sigma DP3 Merrill

2013-02-27 Portraits: Zeiss 135mm f/2 APO-Sonnar

2013-02-17 Sigma 35mm f/1.4 DG HSM: Autofocus Portraits After Fine Focus Adjust

2013-02-10 Sigma 35mm f/1.4 DG HSM: Autofocus Portraits


2012-07-19 Zeiss 28mm f/2 Distagon Outdoor Portrait Examples

2012-06-04 Zeiss 28mm f/2 Distagon as an Environmental Portrait Lens

2012-05-25 Portrait Photographer Asks: D800 or D800E or D3s or D4?

2012-04-08 Nikon D800 Portrait Examples


2011-05-21 Portraits with the Fuji Finepix X100

2011-04-05 Reader Feedback on Zeiss, Nikon Portraits, Review Approach

2011-04-05 Portraits With the Nikon 35mm f/1.4G

2011-04-04 Portraits With the Zeiss 35mm f/1.4 Distagon Wide Open

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