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Sigma 50mm f/1.4 DG HSM Art

Sigma’s fast high performance normal lens..

Nikon 35mm f/1.4 AIS

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

Sony Alpha A7R II Kolarivision for Leica M

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

Sony Alpha A7R

Full frame compact mirrorless with interchangeable lenses..

Sony Alpha A7S

Full frame compact 12-megapixel high-sensitivity sensor with 4K video..

Ricoh GXR with A12 Mount for Leica M Lenses.

Use Leica M lenses on a digital back designed for them..

Leica M Lenses on Olympus OM-D E-M5

Does pricey M glass deliver on mirrorless?.

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..

Sony NEX-7 and NEX-5N

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

Sony Alpha A6000

Value camera: 24 megapixel APS-C sensor with EVF and vibration-free shutter..

Zeiss 24mm f/1.8 for Sony NEX

Moderate wide angle for Sony NEX..

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..

Zeiss Touit 50mm f/2.8M

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

Adapting Other Lenses to Fujifilm GFX

Adapting lenses delivers degraded results in most cases..

Lenses for Leica M8, Leica M9, M*

Lenses for Leica M cameras, especially the M9.

Leica M Typ 240 In Use

Overall design and behavior..

Leica M Monochrom (original)

Ultimate resolution in black and white..

Leica M Monochrom In the Field

Field shooting the Leica MM, and comparisons..

M9: User’s Guide and Review

High resolution digital rangefinder.

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 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/3.8 Elmar-M ASPH

Leica’s best-performing 24mm, and with a flat field..

Leica 28mm f/2 Summicron-M ASPH (pre-2016)

Leica’s widest lens utilizing built-in frame lines..

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 M 50mm Lenses

Six models to choose from..

50/0.95 Noctilux Rendering Style

Understanding the Rendering Style of the Noctilux..

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

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

Leica 75mm f/2 APO-Summicron-M ASPH

Leica’s medium tele for Leica M..

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/2 Biogon

All around razor sharp performer..

ALLVIEW Cameras

ARCHIVAL MATERIAL. Terrific backup bodies or even primary body for M-mount lenses..

ALLVIEW— Any Lens Live View Camera

ARCHIVAL MATERIAL. Eliminating the camera body barrier— any kind of lens with Live View EVF and LCD, and especially Leica M-mount.
HISTORICAL, please see Guide to Mirrorless..


Blog posts, reverse chronological

2018

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

2017

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

2017-04-25 First Impressions in Adapating Lenses to the GFX (Otus 55/1.4)

2015

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

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

2015-01-27 Sony Kolarivision A7R.MOD: Performance with Leica 21mm f/3.4 Super-Elmar-M ASPH

2015-01-23 Sony Kolarivision A7R.MOD: Summary of Performance (Guide to Mirrorless)

2015-01-22 Sony Kolarivision A7R.MOD: Performance with Leica 28mm f/2.8 Elmarit-M ASPH

2015-01-20 Sony Kolarivision A7R.MOD: Performance with Zeiss ZM 21mm f/4.5 C-Biogon (a worst case)

2015-01-19 Sony Kolarivision A7R.MOD: Performance with Leica 50mm f/2 APO-Summicron-M ASPH

2015-01-18 Sony Kolarivision A7R.MOD: Performance with Leica 18mm f/3.8 Super-Elmar-M ASPH

2015-01-18 Sony Kolarivision A7R.MOD: Performance with Leica 24mm f/3.8 Elmar-M ASPH

2015-01-17 Modified Sony A7R Sensor Glass: Impact on Rangefinder Lens Performance

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

2014

2014-11-10 Ray Angle and Rangefinder Lenses: Leica 50/2 APO vs Zeiss 50/2 Planar (Wyman Cabin)

2014-09-16 Zeiss ZM 35mm f/1.4 Distagon for Leica M: Best 35mm M Lens Yet?

2014-04-15 Future Sensors: Will they be Friendly to Rangefinder Lenses? (Ray Angle)

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

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

2014-02-22 Zeiss 15mm f/2.8 Distagon: Aperture Series: Confluence of Branched Creek with Sedges and Boulders (Sony A7)

2014-01-30 Guide to Leica: Leica 18mm f/3.8 Super-Elmar-M ASPH on Sony A7

2013

2013-11-20 How to Correct Off-Center Color Shifts With Photoshop Layers (Sony A7R and Leica M?)

2013-10-13 Sony Full-Frame NEX A7r: Rangefinder Lenses, Telecentric Design

2013-10-10 Sony NEX A7 and A7r: 24 and 36 Megapixels on Full Frame?

2013-08-12 Leica M Typ 240 Lens Coding Failures

2012

2012-01-04 Sony NEX-7: Ray Angle for Zeiss ZM Lenses

2009

2009-11-27 Leica M9 — chief ray angle

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