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GPS Units for DSLRs

GPS units for Nikon and Canon..

Nikon D800E

36 megapixels in a compact full-frame DSLR..

Nikon D800E vs D800

D800E supplement and comparisons with Nikon D800..

Canon EOS 1D X

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

Nikon D3s

Nikon D3s low-light versatile DSLR..

Sony A900

The 24.6 megapixel Sony A900 digital SLR is compared with Canon’ top-of-the-line 21.1MP EOS 1Ds Mark III. A field report including two comparisons with the Canon 1Ds Mark IIII, example images in color and black and white, and the Zeiss ZA 135mm f/1.8 Sonnar. Anti-Shake (SteadyShot) is assessed, as is noise behavior..

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..

Noise ×4: Nikon D3x, Nikon D3, Canon 5D Mark II, & Canon 1Ds Mark III

Noise performance of early 2009’ premier digital SLRs. ISOs from 50 through 25600, dark area noise, noise reduction effects, noise versus resolution. Can more smaller pixels beat fewer large ones?.

Nikon vs Canon: noise and sharpness

Nikon vs Canon: Noise and Sharpness.

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..

Voigtlander 90mm f/3.5 APO-Lanthar SL II

Medium telephoto with world-class chromatic correction..

Voigtlander 180mm f/4 APO-Lanthar

Telephoto with world-class chromatic correction..

Canon TS-E 90mm f/2.8

Medium telephoto tilt/shift lens.

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

Medium telephoto tilt/shift macro focusing lens.

Shift Lenses for Nikon and Canon

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

Pentax K-1

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

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

Full frame ultra wide angle zoom..

Pentax K-3 (APS-C)

23-megapixel APS-C DSLR with an unusual feature set..

Canon 50mm Lenses

Is Canon’s f/1.2 lens really better than an inexpensive f/1.4 or f/1.8?.

Canon 85mm f/1.4L IS USM

Canon’s best-ever medium telephoto and with image stabilization..

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 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 Telephoto APO Macro Lenses: 150mm, 180mm

Sigma’s fast telephoto APO macro lenses..

Nikon 35mm f/1.4 AIS

Nikon’s classic-design manual focus moderate wide angle..

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 58mm f/1.4G

Nikon’s High performance normal lens.

Nikon 58mm f/1.2 NOCT-Nikkor

Nikon’s sought-after high speed aspheric slightly long 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..

Olympus Zuiko Auto-S 50mm f/1.2

An ultra-fast older design still offers appeal on modern digital..

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

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

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..

Hartblei 40/80/120mm SuperRotators

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

Focus Shift In-Depth

Focus shift assesments of a wide variety of lenses of various brands. Shows a range of apertures for each lens and the mount of focus shift, discusses how to compensate for it..

Bokeh and Blur

How a lens blurs when out of focus is a Big Deal..

Sharpness and Blur by Optics

Blur from optical behavior or subject-related issue..

Blur from Camera or Support

Sharpness loss by camera or support or technique..

Digital Sensor Technology

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

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..

Choosing Equipment

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

Color Gamut and Color Space

Color space for digital images. .

Faux HDR and High Dynamic Range

Tips for processing high dynamic range images. .

Expose To The Right (ETTR)

Maximizing image quality, dynamic range, minimizing digital noise. .

Mechanics and Organization

Downloading, organizing, etc. .

Focusing Accuracy (Case Studies)

Focusing accuracy and errors..

Depth of Field

Controlling the zone of sharp detail..


Getting peak performance from your lens.

Field Curvature

Zone of focus, not plane of focus.

Focus Shift and Spherical Aberration

Elusive sharpness, depending on aperture.

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..


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..

Optical Behavior (Case Studies)

Illuminating examples of lens behavior..

Medium Format Magazine

Articles written for

Fujifilm GFX100S

100 megapixels in a body the size of a 35mm DSLR!.

Fujifilm GFX100

100 megapixels in a portable package!.

Fujifilm GFX 50s

Fujifilm skips full-frame to go from APS-C to to medium format..

Adapting Other Lenses to Fujifilm GFX

Adapting lenses delivers degraded results in most cases..

Fujifilm GFX 50R Operational Aspects

Experience, reader insights, etc..

Fujifilm GFX 50S/R Image Processing

Tips on getting the best results..

Fujifilm GF 30mm f/3.5 R LM WR

Compact wide angle.

Fujifilm GF 80mm f/1.7 R WR

Standard normal lens equivalent to 66mm f/1.4..

Hasselblad H6D-100C

How does the very best perform in the field?.

Optimal Images from Hasselblad X1D

Tips on Getting the Best Results..

Pentax 645D 40-Megapixel Medium Format DSLR

A price/performance breakthrough?.

Pentax 645 HD DA 28-45mm f/4.5 ED AW SR

Wide angle zoom for Pentax 645..

Pentax 645 90mm f/2.8 D FA 645 Macro ED AW SR

Medium telephoto macro lens for Pentax 645 digital and film..

Rolleiflex Hy6 Mod 2 Medium Format System

Lens performance at 80 megapixels..

Mamiya DL28 medium format 28 megapixel system

The Mamiya DL28 offers the Mamiya 645 AFD III, the new Sekor AF 80mm f/2.8D lens and the Leaf Aptus-II 6 digital back. Image quality is outstanding and the DL28 should definitely be considered by anyone looking into medium format..

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.

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/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..


Start here to best utilize this guide..

Optical Performance

Sharpness and rendering..

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..

ZF.2/ZE 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..

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 55mm f/1.4 APO-Distagon Rendering Style

Rendering style, bokeh and beauty..

Otus 85mm f/1.4 APO-Planar Rendering Style

Rendering style, bokeh and 'transparency' without peer..

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..


Summary and wrap-up..

Zeiss LensSpire Articles

Articles written for

Backgrounds and Reflectors

Inexpensive item that can make a world of difference to the shot..

Recommended for Health

Stuff that tastes good and is good for you..


The limits of resolution are governed by physics..


Focus accuracy and focus shift..

Misc Reviews

Miscellaneous reviews..

Lens and Camera Issues

Good stuff and not so good stuff..

NEC 4K Ultra HD PA322UHD Professional Display

A expansive and accurate visual experience for video or stills..

Software issues.

[ARCHIVE] Software and related for photographers..

The Apple Mac Pro

[ARCHIVE] Various considerations for buying a Mac Pro..

Ask Lloyd Chambers

Questions and answers on photography and computers and more..

Photo Tips

Photography Hints and Tips..

Grab Bag

Various articles..

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!.

Nikon lenses

Overview and assessments of Nikon lenses.

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.


Beyond deep red, seeing the invisible..

Infrared Cameras Compared

Infrared Cameras Compared: Fuji S3 Pro UVIR, Nikon D70-IR, Canon EOS 5D-IR ..

Nikon D200 vs D2x

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

Canon EOS R

Canon’s first full-frame mirrorless..

Canon EOS R5

Canon’s high-res mirrorless..

Sony A1

Technological tour de force..

Sony Alpha A7R IV

4th Generation standard-setting camera..

Sony Alpha A9

Blackout-free 20 fps speed demon..

Sony Alpha A7R II Kolarivision for Leica M

A7R II modified sensor cover glass for Leica M lens performance..

Menus and Button Setup

How to configure the camera for serious shooting..

Sony FE 28mm f/2

Fast wide angle..

Sony FE 35mm f/1.4 Distagon ZA

Fast and gorgeous moderate wide angle Zeiss design..

Sony FE 35mm f/2.8 ZA Sonnar

Compact moderate wide angle for Sony mirrorless..

Sony FE 55mm f/1.8 ZA Sonnar

Compact normal lens for full-frame Sony mirrorless..

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

Ultra high grade performer at a modest price..

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

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

Fujifilm Finepix X100

The best compact big-sensor digital camera yet?.

Nikon Coolpix A

Fixed 28mm lens with APS-C sensor free of anti-aliasing blur with wonderful color..

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 Digital ED 300mm f/4 IS PRO

Super telephoto with superb bokeh and color correction..

Panasonic Leica DG Nocticron 42.5mm f/1.2 ASPH

Fast, bright and highly corrected medium telephoto..

Olympus OM-D E-M5

Superb ergonomic design in a compact camera..

Olympus OM-D E-M5 Mark II

Updated model with HighRes sensor shift mode..

Comparisons across format.

Can smaller sensor cameras compete with larger ones on any basis?.

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-Pro1

Interchangeable lenses on a 16MP APS-C sensor.

Fujifilm X-Pro2

Fujifilm's 24MP APS-C offering..

Fujifilm Fujinon XF 56mm f/1.2

A bright short telephoto lens..

Sony NEX-7 and NEX-5N

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

Metabones SpeedBooster for Sony NEX

Use DSLR lenses at ~native focal length, and gain a stop of speed..

Zeiss Loxia 21mm f/2.8 Distagon

Outstanding ultra wide angle 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 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 Touit 50mm f/2.8M

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

Leica X Vario

Leica’s 28-70mm APS-C compact camera..

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..

Leica M10-R

Leica M 40 Megapixels..

Leica M10 Monochrom

Leica M 40 megapixel monochrome sensor..

Leica M10

Leica M mount in slim body with SL-type sensor..

Leica M Typ 240 Compared To Full Frame Cameras

Relative sharpness and performance across cameras..

Leica M Typ 240 Compared To APS-C Cameras

Relative sharpness and performance vs APS-C cameras..

Leica M Monochrom (original)

Ultimate resolution in black and white..

Leica M Monochrom Typ 246

24-megapixel CMOS monochrome sensor..

Leica M9: User’s Guide and Review

High resolution digital rangefinder.

Leica M9 Rear LCD, Image Review

Modern digital features lacking with the M9..

Ray angle and Color Shading With M Lenses

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

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

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

Leica 35mm f/2 APO-Summicron-M ASPH

High performance moderate wide angle..

Leica 35mm f/2 Summicron-M ASPH

Leica’s f/2 35mm for the M..

Leica M 50mm Lenses

Six models to choose from..

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

High performance but flawed 50mm normal lens..

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..

Shooting Leica R Lenses on Leica M

General discussion of R lenses on M..

Leica 180mm f/2.8 APO-Elmarit-R

World’s best mid-range telephoto lens..

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 85mm f/4 Tele-Tessar

Compact high performance medium telephoto..

Blog posts, reverse chronological


2022-12-15 How much is Sony Botched Camera and Software Design $Costing You? Is Adobe DNG Converter Viable? The Sony Workflow TAX

2022-09-07 Announced: Hasselblad X2D-100C with 100 Megapixel Sensor, IBIS, Phase-Detect AF

2022-07-12 DSLR is Done

2022-03-20 Ultra Sharp: Mamiya 150mm f/4.5 + FotodioX Pro Fusion Smart Adapter for Fujifilm Medium Format

2022-02-19 Reader Comment, Christopher Campbell: Optimizing the Digitization of Paintings and Drawings


2021-12-26 Fujifilm GFX100S Panorama with GF 30mm f/3.5: White Mountains High Country

2021-12-13 In Praise of Digital vs Film (UPDATED, v3)

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

2021-08-28 Panasonic S1R vs Leica SL2: Sensor Cover Glass Thickness vs Performance for Leica M Lenses, L-Mount Lenses

2021-08-03 Superzoom: Nikon P1000 up to 3000mm Optical Zoom (equiv)

2021-08-01 Fujifilm Medium Format Exerting Intense Market Pressure: Is PhaseOne Going to Survive?

2021-03-24 On the Way for Testing: Sony FE 24mm f/2.8 G, Sony FE 40mm f/2.5 G, Sony FE 50mm f/2.5 G

2021-03-06 Great Blue Herons Require a Very Long Lens, at least in my backyard

2021-03-03 The Most Useful and Practical Telephoto for Wildlife Might Be the Olympus M.Zuiko Digital ED 150-400mm f/4.5 TC1.25X IS PRO

2021-02-10 Fujifilm GFX100S Pixel Shift Mode: How Good is it, and is it Viable for Non-Studio Photography?

2021-02-01 TESTED: Big and Fast Hard Drive for Photography and Videography —  the Western Digital 18TB Ultrastar DC HC550

2021-01-29 Big and Fast Hard Drive for Photography and Videography

2021-01-27 Fujifilm GFX100S Chops $4000 Off Fujifilm GFX100, Cuts Size and Weight, Costs Less than Sony A1! Plus Commentary

2021-01-26 Sony A1 Initial Impressions

2021-01-15 Black Dots in White Spots 'Pimples': is Leica 'Cooking' the Raw Data with Acutance-Enhancing Imaging Pipeline? (CONFIRMED by a reader, also REPLICATED with Leica M10-R)

2021-01-08 Sensor Bifurcation, Stitched Sensors: Affects Leica M10 Monochrom, Leica M10-R, Leica SL2, some Medium Format


2020-12-31 Leica M10 Monochrom: digital artifacts — White Spots on Black Dots — “Pimples”

2020-12-11 Fujifilm Takes Unassailable Leadership of the Medium Format Market: Fujifilm GFX100 with Pixel Shift and Fujifilm GFX100 IR (infrared)

2020-07-10 Canon EOS R5 Supports Focus Stacking via “Focus Bracketing” Feature

2020-07-09 Canon EOS R5 Ships Soon + Canon RF 85mm f/2 Macro IS STM, Canon RF 100-500mm F4.5-7.1 L IS USM, Canon RF 600mm f/11 IS STM, Canon RF 800mm f/11 IS STM

2020-06-28 Reader Comment: Hasselblad X1D-50C II vs Fujifilm GFX100 and Lenses for Each System

2020-05-02 Spectral Cutoff of Sensor Cover Glass vs Ultraviolet Filters on the Lens: Shows UV Filters to be Pointless


2019-12-02 Medium Format Now Costs What High-End 35mm Does, at Least Today on Cyber Monday

2019-11-22 On the Way for Testing: Phase One IQ4 150-Megapixel Medium Format System

2019-10-29 Power Outages Continue

2019-10-26 California Power Outage May Take Mail Server Offline

2019-09-17 Nikon D850 Monochrome: Initial Example, and Frame Averaging for Ultra Low Noise (updated with comments, Sony A7R IV Potential)

2019-08-18 Image Quality: Fujifilm GFX100 vs Fujifilm GFX 50S/R

2019-07-29 Fujifilm GFX100 Service Advisory: “Notification Regarding Potential Loosening of FUJIFILM GFX100 Side Shutter Release “Lock” Function (Vertical grip control lock)”

2019-07-25 Fujifilm GFX100: Severe Autofocus Errors

2019-06-21 Nikon/Canon/Sony Image Quality SUCKS vs Multi-Shot High-Res Mode — Golden Age of Photography Makes me Gripe that Best Ever Cameras Could be Way Better!

2019-06-19 Announced: Hasselblad X1D-50C II, all-new Hasselblad CFV II 50C Digital Back and Hasselblad 907X

2019-06-19 Announced: Hasselblad CFV II 50C Digital Back and Hasselblad 907X V Camera Body

2019-05-26 Focus Shift, a General Discussion

2019-02-13 Canon EOS RP: a 26-Megapixel Full-Frame Entry Level Mirrorless Camera Weighing only 1.07 Pounds

2019-01-12 Reader Comment: Hard Drive Bad Sectors, Enterprise vs Consumer Drives


2018-12-26 Workflow Tip: Locking DNG Files to Prevent Modification by Lightroom/Photoshop, Greatly Reduces Backup Time

2018-10-19 Zeiss Batis 40mm f/2 CF Aperture Series: Evaluating Secondary Color

2018-09-29 Panasonic Bolsters the Full-Frame Mirrorless Market with All new Sensor in Panasonic S1R and Panasonic S1

2018-09-26 The Leica/Panasonic/Sigma Alliance L-Mount Alliance

2018-07-27 Sony DPT-RP1 Digital Paper System

2018-07-25 Hasselblad PR: “Real World” Comparison: Nikon D850 with Decrepit Nikon 17-35mm f/2.8 Zoom Compared Without Format Equivalence or Validation of Basics

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

2018-07-04 OWC Express 4M2: 4-Slot M.2 NVMe SSD Enclosure


2017-10-28 Sony Alpha A7R III: Pixel Shift Facts

2017-09-16 The PhaseONE IQ3 100 Megapixel Trichromatic Sensor/Camera

2017-08-26 Nikon D850: Turning Those Old Slides and Negatives into Digital Images

2017-08-26 Nikon D850: Metering (I Want Auto-ETTR!)

2017-08-23 Nikon Announces the D850, Commentary + Reader Comments

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

2017-06-20 Leica M10 Coming This Week

2017-05-03 Reader Question: Adapting Medium Format Lenses to the Fujifilm GFX

2017-05-03 Fujifilm GFX Sensor Cover Glass Thickness?

2017-04-24 Is the Fujifilm GFX Suitable as a Digital Back?

2017-04-24 Fujifilm Starts Professional Services Program

2017-04-19 Sony’s New α9 Camera Appears to Target the High-End Sport Shooter Market

2017-03-04 Fujifilm GFX 50s: Initial Impressions and Defective Camera (?) Stuck on Continuous Shooting Mode

2017-01-18 Leica M10: Inertial Design

2017-01-14 Medium Format Hasselblad X1D and Fujifilm GFX vs Leica S & M and Leica SL

2017-01-07 Reader Question: Sensor Pixel Density, Oversampling


2016-12-15 Sigma sd Quattro H Due in Mid January

2016-11-26 Black Friday Specials, Links (updated @ 16:50 PST Nov 26)

2016-10-18 The Sinar Leica S Mirrorless Camera

2016-09-20 Canon 5D Mark IV: Adobe Does Not Support Dual Pixel RAW

2016-09-19 Olympus OM-D E-M1 Mark II: Major Improvements and New Features

2016-09-19 Olympus 25mm f/1.2 PRO

2016-09-19 Fujifilm GFX 50S Disrupts the Medium Format (and 35mm) Marketplace

2016-09-01 Panasonic Leica DG Summilux 12mm f/1.4 ASPH

2016-05-23 Motion Correction for Pentax K1 SuperRes Images via Pentax Digital Camera Utility

2016-05-17 Pentax Digital Camera Utility (for Pentax K1 or K3 II, etc)

2016-05-16 Pentax K1 SuperRes Res Mode: Motion Correction Feature with Adobe Camera Raw and Pentax Digital Camera Utility

2016-05-05 Sony RX100 4 Years Later: Image Quality and Fill Flash Still Impress

2016-05-04 REVIEWED: Sony RX10 III

2016-03-29 Zeiss Rebates for DSLR and Rangefinder Lenses + New Products from Sony

2016-03-25 Fujifilm X-Pro2 Firmware Update Fixes Settings-Reset Glitch

2016-03-17 Fujifilm X-Pro2: Fractal-Like “Wormy” Artifacts (Clay Pot)

2016-03-14 Reviewed: Olympus M.Zuiko Digital ED 300mm f/4 IS PRO

2016-03-14 Olympus 300mm f/4 IS Pro: Examples in Death Valley’s Cottonwood Canyon

2016-03-14 Olympus 300mm f/4 IS Pro Aperture Series: Flash-Flood-Shredded Brush on Marble Canyon Wall, Death Valley

2016-02-03 Sony A6300, and the Fujifilm X-Pro2

2016-01-03 100 Megapixels: Phase One Ships Its XF 100MP Camera System


2015-12-17 Crazy Good Deal on Canon G16 + Printer/Paper

2015-12-06 B&H Deals Today

2015-12-04 Best Starter Camera Deal?

2015-12-03 The Weird Stuff that Sells for Gifts

2015-12-03 B&H Deals Today

2015-11-30 Cyber Monday Deals at OWC and B&H Photo

2015-10-27 Spectral Transmission of Digital Sensors

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

2015-10-21 Impressions of 4K Television

2015-10-20 Leica SL Typ 601 Full-Frame Mirrorless Camera System: the Logical Joining of DSLR and Mirrorless

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

2015-09-15 Sony Announces an Uncompressed File Format for A7R II and Future Cameras

2015-09-15 Reader Comment: Travel Cameras, Small Kit

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

2015-09-03 Kolarivision Sony A7R II with Leica M Lenses: Coming Soon

2015-08-30 Which Zeiss Lens Doesn’t Get Much Love?

2015-08-26 Canon EOS M3: Coming to USA

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

2015-08-08 Sony A7R II with Leica M Lenses

2015-08-04 Readers Write on the Sony A7R II: is there a quality issue with the EVF?

2015-07-29 See in the Dark: ISO 4,000,000 with the Canon ME20F-SH

2015-07-21 Sony A7R II: Poor Battery Life? And Can it Charge via USB?

2015-07-07 Sony A7R II: Is it the Death Knell for Leica M?

2015-06-19 Iridient Developer Updated to v 3.0.3 (adds support for new cameras)

2015-06-12 Tested: Lexar 256GB 1000X SDXC Card

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

2015-06-10 Announced: Sony A7R II with 42-Megapixel sensor, In-Body-Image-Stabilization, 4K Video

2015-05-27 Leica M Monochrom Typ 246: Aperture Series to Assess Diffraction and Digital Artifacts (Dolls)

2015-05-07 Tested: Lexar 128GB 1066X Compact Flash Digital Camera Storage Card

2015-05-07 Leica 24-Megapixel Leica M Monochrom Typ 246 Starts Shipping

2015-04-22 Pentax K3 II: Out-Innovating Nikon and Canon

2015-03-31 Iridient Developer Supports Olympus OMD E-M5 Mark II 64MB Raw and Canon 5D S Raw

2015-03-20 Hi-Res Sensor Shift: Can 16 megapixels become 40 megapixels?

2015-03-01 The Camera for Cycling

2015-02-22 It’s 2015: Where Does Leica M Stand?

2015-02-05 Canon’s 50 Megapixel Leap: EOS 5DS and EOS 5DS R

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

2015-01-16 Sony A7R: Sensor Glass Thickness, Ray Angle and Image Degradation: Kolarivision Modification


2014-12-10 Sony Pictures Hacked: Do You Really Want to Update your Camera Firmware with a Sony Updater that Runs as 'root'?

2014-11-30 Cyber Monday Deals

2014-11-26 B&H Photo Black Friday Deals

2014-11-21 An Interview with Ming Thein on His High-Definition Ultraprint

2014-09-02 Zeiss Loxia: Manual Focus All Metal Build Lenses for Mirrorless Full Frame

2014-08-18 Understanding the Pentax 645Z Histogram (useful for any brand camera)

2014-07-24 A conversation with Ming Thein on the Pentax 645Z and Nikon D810 and More

2014-07-02 $299 for a DSLR with Lens, also Sony A7s in stock

2014-06-07 Sigma 50mm f/1.4 DG HSM 'Art' On the Way for Testing

2014-05-31 Zeiss 85mm f/1.4 Planar: Dual-Focus Aperture Series 'Radio Towers' (D800E)

2014-05-15 Pentax 645z: Hitting the Bullseye on Which Target?

2014-05-14 Digital Camera Market Might be (almost) Stabilizing for ILCs

2014-04-24 Leica T System vs Sony A7/A7R for those M Lenses

2014-04-14 Pentax 645Z 51-Megapixel Medium Format DSLR, 13 Pentax Lenses Now Avail in USA

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

2014-04-09 Why Is an f/1.2 Lens so Dark on Digital?

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

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

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

2014-02-23 Ricoh GR: Circular Ring Artifacts (“Ring Shadow Effect”) Followup

2014-02-04 Iridient Developer Updated for Fujifilm, Olympus, Panasonic, Canon, PhaseOne

2014-01-30 Nikon D800E and D800 Instant Savings

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)


2013-12-05 Sony A7R: the Kitchen Sink Menu System Design Paradigm is Alive and Well

2013-10-26 Iridient Developer Updated for Nikon, Sony, Fujifilm, Panasonic, Leica

2013-10-11 iPhone 5s White Balance and Using JPEG vs DNG

2013-10-03 Leica R to M Lens Adapter

2013-09-24 iPhone 5s vs Nokia Lumia 1020 Camera Phones (Oversampling and Downsampling)

2013-09-18 A Full-Frame Sony NEX Soon? And Maybe a Surprise?

2013-08-26 Leica M Typ 240: Unreliability Continues: Freeze and System Reset

2013-08-10 Nikon’s Camera Sales for Q1, 2013

2013-08-01 Rx for Profit = Sony RX* ?

2013-07-31 Is the Full Frame DSLR the New Medium Format? What do DSLRs Lack?

2013-07-10 Canon Rebates and Printer bundles

2013-07-02 Ricoh GR Digital: More Examples, and Conclusions

2013-07-02 Canon EOS 70D

2013-06-26 Iridient Developer with Enhanced support for Fujifilm X Files (and Black & White)

2013-06-20 Ricoh GR Digital Night Shooting

2013-06-17 Ricoh GR Digital Night Shooting

2013-06-14 Ricoh GR Digital First Impressions

2013-06-03 Why the Hand Wringing about Chicago Sun Times Layoff of Photographers?

2013-05-31 The Camera Market: Declining Sales and Inertial Design?

2013-05-10 Iridient Developer Updated to Version 2.1 with Support for Fuji XTrans Sensor

2013-05-07 Nikon D800 Infrared First Look with Zeiss 25mm f/2.8 IR-Distagon

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

2013-04-26 APS-C Emerges as “the new full frame quality” + the Sagging Momentum of Micro Four Thirds (m4/3)

2013-04-23 Fujifilm X100S: Digital Artifacts

2013-04-10 Leica M Monochrome with Color Filters and Leica 50mm f/2 APO-Summicron-M ASPH

2013-03-11 Reader Asks: Leica M Typ 240 / M240 + 50/2 APO or Sigma DP2 Merrill?

2013-03-10 Iridient Digital 'Iridient Developer' Now Handles Sigma DP Merrill X3F Files

2013-03-08 Sigma DP3 Merrill Examples

2013-03-05 Is there a New Trend in Compact Cameras? (fixed lens, large sensor, Nikon Coolpix A)

2013-03-01 What Happens if the Sensor is not Exactly Plane Parallel to the Lens Mount?

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


2012-12-10 Various Deals at B&H Photo

2012-11-29 ETTR (Expose to the Right) — An Essential Skill to Master for Image Quality

2012-11-27 A CALL TO ACTION: Build Intelligent ETTR Into Digital Cameras

2012-11-18 Metering: Incident Light Meter or Camera Histogram?

2012-10-29 Which Camera (Brand)?

2012-10-27 Thoughts on the Direction of Digital

2012-10-21 Why Don’t Digital Cameras Offer a Perfect ETTR exposure with a true raw histogram too?

2012-10-08 Analysis of Sony RX1 Press Release

2012-09-22 Fujifilm X-Pro1 — Same Artifacts from the Funky Sensor Design

2012-09-08 Canon G12 + Pixma Pro 9000 Printer for a rock-bottom $298

2012-08-19 Sony RX100 RAW Support in Iridient Digital RAW Developer

2012-07-23 Canon EOS M APS-C Point & Shoot

2012-07-20 Prices Plummet on Some Leica Bodies

2012-07-16 A Great Deal on a 4/3 Camera? (Panasonic Lumix DMC-GF3 Digital Camera with 14mm Lens)

2012-06-02 Nikon D800E vs Canon 5D Mark III vs Leica M9

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

2012-05-11 Fun With Squares

2012-05-10 Leica M Monochrom — 18-Megapixel Monochrome Sensor

2012-04-24 Nikon EN-EL15 Battery Recall

2012-04-14 Nikon D800 Focusing Screens: BrightScreen and KatzEye

2012-04-07 Readers Comment on my Nikon D800 vs Leica S2 Shootout

2012-04-01 What I Want in a 2012 Digital SLR

2012-03-10 Which 28mm Leica M Lens is Best? 28/2.8 Elmarit or 28/2 Summicron?

2012-03-08 Thoughts on Canon EOS 5D Mark III, 22.3 Megapixels

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

2012-01-19 Handheld Ultraviolet Photography by Camera Conversion

2012-01-12 Fuji X-Pro1 — Fujinon XF Lenses on X Mount

2012-01-09 Pearstone Digital Video Camera Bag


2011-12-21 LCDVF Digital SLR Viewfinder (for Live View focusing, video, viewing LCD in bright light, presbyopia)

2011-12-14 B+W XS-Pro Filters Not Compatible With Zeiss ZF.2 / ZE Lenses

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

2011-12-01 Reader Asks: Color Asymmetry with Leica 35mm f/2 Summicron-M ASPH

2011-06-24 Leica M Lenses on Sony NEX-5 with Novoflex Lens Adapter

2011-06-10 Open Letter to Leica — 10 Ways To Improve the M9 Rangefinder

2011-04-26 Thom Hogan Comments on Hi-Res Digital

2011-03-21 Digital Infrared Presentation Tonight in San Jose, CA

2011-03-01 RAW Developer 1.9 Offers Major Boost In Performance


2010-12-08 Pentax 645D 40 megapixel medium format camera coming soon

2010-12-04 Digital restoration of aged or damaged prints

2010-10-29 Speaking at FotoClave 2010

2010-10-15 FotoClave 2010 in San Jose, CA October 29-31

2010-09-27 FotoClave 1010 in San Jose, CA October 29-31

2010-07-11 Fast 2TB drive for your Mac or PC

2010-05-01 Digital Infrared Class— Saturday May 1 at Keeble & Shuchat in Palo Alto, CA

2010-04-30 Digital Infrared Class— Saturday May 1 at Keeble & Shuchat in Palo Alto, CA

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


2009-12-03 Nikon D3s— see-in-the-dark game-changing marvel

2009-10-14 Reviewed — 2TB Western Digital RE4-GP

2009-06-08 Canon 5D Mark II image quality

2009-05-01 Need backup space?

2009-03-17 Mac Pro Nehalem 2.93 GHz

2009-02-03 Lens recommendation: Voigtlander 40/2 Ultron ASPH


2008-12-24 Nikon 50mm f/1.4G — what avian species?

2008-07-30 Leaf’s 56 megapixel rotating sensor digital back

2008-07-23 Trendsetter? Panasonic Lumix DMC-LX3

2008-07-18 Update on PhaseOne P45+ 39 megapixel Monochrome back

2008-07-09 PhaseOne monochrome medium-format digital back

2008-07-09 New recommendation: Bear Images of Palo Alto

2008-07-07 Hasselblad’s 50 megapixel “full frame”

2008-06-14 Digital Infrared — Making Images

2008-04-07 Canon G9 infrared

2008-03-27 Digital artifacts

2008-03-12 Digital infrared

2008-01-12 Canon’s “Lens Work”


2007-12-15 Digital SLR resolution — the future

2007-12-14 Digital file sizes — be careful what you wish for

2007-11-06 Fuji F50 infrared

2007-11-01 Canon’s Digital Photo Profession lens aberration correction

2007-10-24 In the market for a point and shit camera?

2007-09-22 Digital infrared class September 27 in Palo Alto, CA

2007-09-17 Nikon vs Canon

2007-09-08 Digital infrared class coming September 27

2007-08-28 Special offer on diglloyd Pro Reviews

2007-08-25 Digital infrared queries

2007-08-19 21-megapixel Canon EOS 1Ds Mark III

2007-08-16 More thoughts on 22-megapixel Mamiya ZD

2007-08-13 Digital Photo Professional 3.0.2 preview problem

2007-08-10 Nikon’s true-color sensor patent

2007-07-28 PhaseOne monochrome digital back followup

2007-07-26 PhaseOne monochrome medium format digital back

2007-07-22 Zeiss 35mm f/2 Distagon (and Canon 1D Mark III)

2007-07-04 Shooting stars followup

2007-06-21 Sigma DP1—first of a new genre of digital cameras?

2007-06-17 Canon 1D Mark III color

2007-06-05 Canon EOS 1D Mark III color and noise

2007-05-28 Canon lens instant savings

2007-05-13 Why digital point and shoot cameras are “all shit”

2007-05-08 Guide to Digital Infrared

2007-03-26 SanDisk Extreme III 16GB for US$238

2007-02-28 Mac Pro and Canon Digital Photo Professional

2007-01-15 Are your sunglasses protecting your eyes? Sunglasses vs Infrared and Ultraviolet Light


2006-12-08 Pictures lost—counterfeit SanDisk 8GB Extreme III card

2006-11-11 Leica vs Panasonic

2006-11-08 Leica M8 infrared problems

2006-11-07 Infrared false color

2006-10-17 Digital Infrared class next week

2006-09-29 Ice, Rock and Life

2006-09-01 Infrared Comparison Coming Soon

2006-08-27 Digital Infrared Class—October 25 at Keeble & Shucat

2006-08-20 How much memory to buy?

2006-08-09 The Fujifilm S3 Pro UVIR camera

2006-04-15 MacBook Pro 2.16 GHz beats dual Opteron 2.4GHz

2006-04-11 Running Parallels virtualization software on the MacBook Pro

2006-01-20 Color Temperature and Noise with Digital Cameras

2006-01-09 Intel-based Macs not so fast (at least not yet)

2006-01-07 Comments on the newly-announced Hasselblad H2D

2006-01-06 Whither the digital monochrome camera?

2006-01-01 Backing up is good to do...

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