Ray Angle, Vignetting, Color Shading on a Digital Sensor
Evenness of illumination, color shading, digital sensor effects, ray angle..
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2018-07-06 Reader Question on Vignetting for Zeiss Loxia 50mm f/2 Planar
2017-05-03 Fujifilm GFX Sensor Cover Glass Thickness?
2017-04-25 First Impressions in Adapating Lenses to the GFX (Otus 55/1.4)
2015-09-03 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 24mm f/3.8 Elmar-M ASPH
2015-01-18 Sony Kolarivision A7R.MOD: Performance with Leica 18mm f/3.8 Super-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
2014-11-10 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?
2014-09-02 Zeiss Loxia: Manual Focus All Metal Build Lenses for Mirrorless Full Frame
2014-04-15 Future Sensors: Will they be Friendly to Rangefinder Lenses? (Ray Angle)
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
2014-02-15 Readers Comment on the Sony A7 / A7R
2014-01-30 Guide to Leica: Leica 18mm f/3.8 Super-Elmar-M ASPH on Sony A7
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
2013-07-19 Reader Comment on Ricoh GR: Leaf Shutter In Lens and ND Filter + Vision & Autofocus
2013-05-02 Nikon D800E vs Canon 5D Mark III: Sharpness
Evenness of illumination, color shading, digital sensor effects, ray angle..
Understanding astigmatism..
High-resolution L-mount full-frame from Panasonic..
Sigma 28mm f/1.4 DG HSM Art.
47 megapixel with Multi-Shot Hi-Res mode..
Fast short wide angle lens for L-Mount cameras..
Sigma’s fast high performance normal lens..
Nikon’s classic-design manual focus moderate wide angle..
Adapting lenses delivers degraded results in most cases..
Sharpness and rendering..
Ultra high performance in an extreme wild wide angle lens..
A brilliant, but also colorful character..
Brilliant imaging, even wide open, but with a few quirks. (Review in progress) .
Ultra high performance with a fast aperture..
A gem with unusual close-focus..
Brilliant imaging in a compact package..
Rendering style, bokeh and beauty..
Lenses for Leica M cameras, especially the M9.
Full frame compact mirrorless with interchangeable lenses..
A7R II modified sensor cover glass for Leica M lens performance..
Full frame compact 12-megapixel high-sensitivity sensor with 4K video..
Shutter vibration (or not)..
Eliminating the camera body barrier— any kind of lens with Live View EVF and LCD.
Use Leica M lenses on a digital back designed for them..
Does pricey M glass deliver on mirrorless?.
Razor sharp 28mm lens on APS-C sensor and outstanding usability and features..
Full frame camera in an ultra-compact body with or without anti-aliasing filter..
24 or 16 megapixels in a compact body with APS-C sensor..
Value camera: 24 megapixel APS-C sensor with EVF and vibration-free shutter..
Moderate wide angle for Sony NEX..
Ultra wide angle lens for Sony NEX or Fujifilm X..
Normal lens for Sony NEX or Fujifilm X..
Moderate telephoto macro lens for Sony NEX or Fujifilm X. Useful on full frame too!.
Overall design and behavior..
Relative sharpness and performance across cameras..
Ultimate resolution in black and white..
Field shooting the Leica MM, and comparisons..
High resolution digital rangefinder.
Modern digital features lacking with the M9..
Off-center color casts, off-center sharpness..
Focal lengths, color, weight and travel considerations. (relevant, but dated/old material).
Leica’s widest prime lens..
Leica’s fastest and widest lens..
Leica’s best-performing 21mm..
Leica’s fast wide angle..
Leica’s best-performing 24mm, and with a flat field..
Leica’s widest lens utilizing built-in frame lines..
Leica’s smallest and lightest M lens with superlative performance..
Leica’s superlative and most natural lens for the M..
Six models to choose from..
Understanding the Rendering Style of the Noctilux..
High performance but flawed 50mm normal lens..
Leica’s medium tele for Leica M..
Notes and examples..
Compact high performance, ultra low distortion..
Moderate speed high contrast ultra-wide..
Zero distortion ultra-wide..
Compact wide angle with brilliant contrast..
Compact wide angle..
Fast and ultra high performance moderate wide angle rangefinder lens..
All around razor sharp performer..
ARCHIVAL MATERIAL. Terrific backup bodies or even primary body for M-mount lenses..
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..
2018-07-06 Reader Question on Vignetting for Zeiss Loxia 50mm f/2 Planar
2017-05-03 Fujifilm GFX Sensor Cover Glass Thickness?
2017-04-25 First Impressions in Adapating Lenses to the GFX (Otus 55/1.4)
2015-09-03 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 24mm f/3.8 Elmar-M ASPH
2015-01-18 Sony Kolarivision A7R.MOD: Performance with Leica 18mm f/3.8 Super-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
2014-11-10 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?
2014-09-02 Zeiss Loxia: Manual Focus All Metal Build Lenses for Mirrorless Full Frame
2014-04-15 Future Sensors: Will they be Friendly to Rangefinder Lenses? (Ray Angle)
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
2014-02-15 Readers Comment on the Sony A7 / A7R
2014-01-30 Guide to Leica: Leica 18mm f/3.8 Super-Elmar-M ASPH on Sony A7
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
2013-07-19 Reader Comment on Ricoh GR: Leaf Shutter In Lens and ND Filter + Vision & Autofocus
2013-05-02 Nikon D800E vs Canon 5D Mark III: Sharpness
2012-03-16 Reader Comments: Zeiss 15/2.8 Distagon
2012-01-04 Sony NEX-7: Ray Angle for Zeiss ZM Lenses
2009-11-27 Leica M9 — chief ray angle