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Nikon D800E vs D800

D800E supplement and comparisons with Nikon D800..

Nikon D800 Monochrome Conversion by

D800 with the RGB Bayer matrix removed for a true monochrome sensor..

Nikon D850 Monochrome Conversion by

D850 with the RGB Bayer matrix removed for a true monochrome sensor..

Landscape Photography at Wide Apertures

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

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

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

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-S 14-24mm f/2.8G ED

Nikon’s ultra wide angle zoom and the Nikon 14mm f/2.8, critical focus shift behavior..

Leica S2 37.5 Megapixel Medium Format DSLR

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

Leica 45mm f/2.8 Elmarit-S ASPH

Moderate wide angle with low distortion..

Zeiss LensSpire Articles

Articles written for


Filter know-how and spectral transmission..


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

Lens and Camera Issues

Good stuff and not so good stuff..

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..


Beyond deep red, seeing the invisible..

Nikon D200 vs D2x

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

Nikon NIKKOR Z 14-24mm f/2.8 S

Ultra-wide fast zoom..

Sony Alpha A7R II

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

Sony FE 24mm f/2.8 G

High performance, high speed..

Sony FE 40mm f/2.5 G

High performance, high speed..

Sony FE 50mm f/2.5 G

High performance, high speed..

Sigma FE 14-24mm f/2.8 DG DN Art

Native-mount ultra wide angle high performance zoom for mirrorless..

Sony FE 12-24mm f/2.8 GM

Fast extreme wide angle zoom..

Sony Cybershot DSC-RX1 / RX1R

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

Fujifilm X-Pro2

Fujifilm's 24MP APS-C offering..

Zeiss Batis 25mm f/2 Distagon

Autofocus wide angle for Sony full-frame mirrorless..

Leica X2

Leica’s large-sensor 'affordable' compact camera..

Leica M11 Monochrom

Leica M 60-megapixel monochrome sensor..

Leica M10 Monochrom

Leica M 40 megapixel monochrome sensor..

Leica M10

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

Leica M Monochrom (original)

Ultimate resolution in black and white..

Leica M Monochrom Typ 246

24-megapixel CMOS monochrome sensor..

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 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 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

High performance but flawed 50mm normal lens..

Leica 280mm f/4 APO-Telyt-R

Compact and ultra high performance long telephoto..

Zeiss ZM 35mm f/1.4 Distagon

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

Voigtlander M Nokton 21mm f/1.4

Fast high performance wide angle..

Blog posts, reverse chronological


2022-01-22 Beware of Claims for Apple MacBook Pro M1 Max Speed Gains Over Intel! OpenCL on/off can be win/lose


2021-09-11 Infrared Leakage to 850nm with Leica SL2?

2021-07-24 Fujifilm GFX100: Horizontal White Stripes a Problem for Numerous Images from my last trip

2021-07-15 Polarizers: Spectral Transmission Uniformity and Brightness

2021-07-11 To Polarize or not to Polarize? Examples Showing Effect on Color Balance

2021-03-23 Sony Delivers on the Promise of Mirrorless with Three Diminutive and Ultralight High Performance Prime Lenses, at 24mm, 40mm, 50mm

2021-02-12 Reader Comment: Black and White Photography “samples you have are some of the best I have seen” + How to Process

2021-01-26 Leica M10 Monochrom: Filter Comparison (Sulfur Mine, Death Valley)


2020-12-25 Leica M10 Monochrom, Reader Comments

2020-12-13 Tips for Notably Sharper Images on the Leica M10 Monochrom, Leica M Monochrome (Typ 246), etc

2020-12-13 Leica M10 Monochrome: Filters and Focus Error / Sharpness

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

2020-05-28 Reader Questions on Hasselblad X1D II: Leaf Shutter Vibration vs Electronic Shutter

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

2020-02-28 FOR SALE: Hasselblad XPAN II with 30mm f/5.6, viewFinder and center filter, case plus 45mm f/4 with polarizer, Sony A7R III, Leica M Lenses, Leica M240

2020-01-29 P100 / N100 Particulate Respirator the Smart Move for Coronavirus — not the Useless Leaky Masks That People are Seen Wearing in the News


2019-10-13 Nikon D850 monochrome: Creating a Color Image from Monochrome Using Filters

2019-10-03 Nikon D850 monochrome: Creating a Color Image from Monochrome Using Filters

2019-07-20 Breakthrough Photography 6-stop ND Polarizer for Motion Blur in Broad Daylight + Reader Comments

2019-06-26 Computational Photography: PhaseOne Introduces Automated Frame Averaging


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

2018-06-26 Breakthrough Photography Magnetic Filter System

2018-04-11 Concussion Progress: a Joyous Breakthrough over-the-hump Day


2017-11-30 Cleaning your filters: Warm Water with Amphoteric Surfactants

2017-08-26 Nikon D850: Time Lapse is a Breakthrough for Nikon DSLRs... First Solid 8K Support?

2017-04-30 Aurora Aperture Neutral Density Filters: 6, 12, 16 Stops with Excellent Neutrality


2016-12-03 2016 MacBook Pro TESTED: Photoshop Filters

2016-08-10 Wondering about 50/55mm Lenses on Sony

2016-07-13 Aurora Aperture Introduces PowerUV Protection and CPL Filters with Corning 'Gorrilla Glass'

2016-05-18 B&H Photo Now Has Breakthrough Photography Neutral Density Filters

2016-02-02 Breakthrough Photography Light Pollution Filter

2016-02-02 Breakthrough Photography Circular Polarizing Filters (CPOL)


2015-10-27 Spectral Transmission of Digital Sensors

2015-10-01 Reader Inquiry: Zeiss Batis Weather Sealing

2015-06-03 Snow in the Hoover Wilderness

2015-05-31 Zeiss Batis 25mm f/2 and 85mm f/1.8 in the Field

2015-05-27 Leica 24-Megapixel Leica M Monochrom Typ 246 Arrives for Testing

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

2015-04-17 Breakthrough Photography X3 10-stop Neutral Density Filter

2015-01-13 Terrific Deal: HOYA 82mm HMC Polarizer


2014-09-08 Filters for the Zeiss Otus 85mm f/1.4 APO-Planar

2014-01-25 Cleaning your filters: Warm Water with Amphoteric Surfactants

2014-01-20 Using a Polarizer: Many Options for Desired Visual Effect


2013-10-16 Sony A7, A7R: Breakthrough in Image Quality in a Compact Package with Killer EVF and LCD Too

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

2013-02-25 Zeiss 15mm f/2.8 Distagon + Zeiss 95mm T* Polarizer

2013-01-12 Zeiss Filter line Now 49mm + 95mm Polarizer


2012-10-16 Zeiss Polarizers

2012-10-10 Reader Asks: Why Do Color Filters Matter on the Leica M Monochrom?

2012-09-27 Leica M Monochrom — Sharpness With Filters

2012-07-14 Reader comment: new Leica 50mm f/2 APO-Summicron-M ASPH

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

2012-03-16 Zeiss 95mm Filters for 15/2.8 Distagon

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

2012-01-30 Reader Comment: B+W XS-Pro Filters Don’t Fit Sony 24/1.8


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

2011-12-09 Lenses on the Way for Review: Leica 28/2.8, Voigtlander 35/1.2 and 50/1.1

2011-10-28 Zeiss UV Filters and Circular Polarizers

2011-10-25 Veiling Flare With and Without a Polarizer

2011-07-17 Which Neutral Density Filters for Wide Aperture Landscapes?


2010-06-27 Tips for buying filters

2010-06-21 Wide aperture landscapes: lenses and filters

2010-06-03 Depth of field with a fast lens in daylight

2010-05-27 Do filters degrade image quality or do they have no effect?

2010-03-20 Huge Nikon ultra-wides review — now published!

2010-03-16 Nikon ultra-wide zooms: 24mm crops published

2010-03-12 Four Nikon wide zooms (16-35/4, 17-35/2.8, 14-24/2.8, 24-70/2.8 comparison)


2009-12-08 Should you use a filter on your lens?


2008-07-09 Do Filters degrade image quality

2008-07-05 Spectral transmission graphs

2008-07-05 Cleaning your filters

2008-05-04 UV filters—Hoya vs B+W

2008-05-02 Spectral transmission graphs


2007-04-13 Reviews and software delivery, spam filters

2007-01-03 Photoshop’s artistic filters

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