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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..

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..

Image Rendition

Visible spectrum, cameras, color space, infrared vs. color & examples..

Shooting Considerations

All about shooting in infrared..

Canon Lenses

How Canon lenses perform for infrared use..

Wrap-up and Summary

Conclusions and where to find products and additional information..

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..

Sony Alpha A7R II

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

Sony Cybershot DSC-RX1 / RX1R

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

Zeiss Batis 25mm f/2 Distagon

Autofocus wide angle for Sony full-frame mirrorless..

Leica X2

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

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. Leica Q moves to L-mount in June 2019..

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

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

Leica 90mm f/2.2 Thambar-M

Leica’s retro telephoto..

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..

Blog posts, reverse chronological


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

2018-06-21 Leica 90mm f/2.2 Thambar-M Aperture Series, With and Without Its center Filter: Sprinter Van


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

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

2015-05-27 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

2015-02-06 Canon’s EOS 5DS R: no Optical Low Pass Filter / Anti-Aliasing Filter

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


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

2014-05-21 Sigma dp Quattro Sensor Spectral Sensitivity for True-Color Images with Full Spatial Resolution

2014-02-28 Just for Fun: the Photoshop Oil Paint Filter

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

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


2013-07-19 Reader Comment on Ricoh GR: Leaf Shutter In Lens and ND Filter + Vision & Autofocus

2013-07-19 Reader Comment on Ricoh GR: Leaf Shutter In Lens and ND Filter + Vision & Autofocus

2013-05-08 Nikon D800E vs Canon 5D Mark III: the Nikon D800E Optical Low Pass Blur+Unblur Filter Pack

2013-05-08 Nikon D800 Infrared: 715nm vs 830nm Filtration

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]

2013-04-10 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

2013-02-21 Nikon D7100 — No Anti-Aliasing Filter

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

2012-05-05 Thoughts on Moiré and DSLR Resolution and the Optical Low Pass Filter

2012-04-10 Reader Comments on Reviews, AA Filter

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

2012-01-12 Fuji X-Pro1 Sensor Design — No Anti-Aliasing Filter for Sharp Images


2011-12-19 Nikon 36 Megapixel D800 Without an Anti-Aliasing Filter?

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?


2010-07-22 Deconvolution sharpening to counteract the anti-aliasing (blur) filter on the Nikon D3x (or Canon) — comparison revisited with the Leica S2

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

2008-04-02 Hyperspectral imaging

2008-03-31 Multispectral photography


2007-08-22 Mail server spam filtering

2007-07-27 Monochrome vs color filter array (Bayer) sensor

2007-07-24 Emails will not be delivered to spam-filter services

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

2007-01-03 Photoshop’s artistic filters

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