Leica 75mm f/2 APO-Summicron-SL ASPH
Fast short telephoto lens for L-Mount cameras..
Change in lens focus such as electronic glitches or gravity acting on a focusing helicoid.
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2021-05-07 Test Protocol for Focus Creep / Unstable Lens Focus
2021-04-04 Voigtlander FE 65mm f/2 APO-Lanthar Aspherical Defocuses Itself When Angled Up or Down (Focus Creep)
2019-07-22 Fujifilm GFX-100: ISO 50 vs 100, Sensor Transit Time, 16-bit vs 14-bit Capture, Unstable Lens Focus
2019-06-13 Leica 75mm f/2 APO-Summicron-SL ASPH: Focus Instability
2019-06-12 Leica 90mm f/2 APO-Summicron-SL ASPH: Focus Instability
2017-07-15 Reader Comment: Nikon 28mm f/1.4E ED, Fujifilm GF Focus Stability
2013-09-05 Sony RX1R: Unstable Manual Focus
2013-07-11 Comments on Fujifilm X System
2013-07-10 Fujifilm X-E1 Kit: Returned Entire System for a Refund
Fast short telephoto lens for L-Mount cameras..
Fast short telephoto lens for L-Mount cameras..
100 megapixels in a portable package!.
Ultra high speed telephoto equivalent to 90mm f/1.6..
High performance macro photography on medium format, equivalent to 99mm f/3.3..
Mirrorless large format with leaf shutter lenses, 3rd generation..
Moderate telephoto..
High-grade manual focus wide-normal lens..
Full frame camera in an ultra-compact body with or without anti-aliasing filter..
Compact sibling of the Fujifilm X-Pro1.
Short telephoto macro lens..
Ultra wide angle lens for Sony NEX or Fujifilm X..
Normal lens for Sony NEX or Fujifilm X..
World-class performer for Leica M..
2021-05-07 Test Protocol for Focus Creep / Unstable Lens Focus
2021-04-04 Voigtlander FE 65mm f/2 APO-Lanthar Aspherical Defocuses Itself When Angled Up or Down (Focus Creep)
2019-07-22 Fujifilm GFX-100: ISO 50 vs 100, Sensor Transit Time, 16-bit vs 14-bit Capture, Unstable Lens Focus
2019-06-13 Leica 75mm f/2 APO-Summicron-SL ASPH: Focus Instability
2019-06-12 Leica 90mm f/2 APO-Summicron-SL ASPH: Focus Instability
2017-07-15 Reader Comment: Nikon 28mm f/1.4E ED, Fujifilm GF Focus Stability
2013-09-05 Sony RX1R: Unstable Manual Focus
2013-07-11 Comments on Fujifilm X System
2013-07-10 Fujifilm X-E1 Kit: Returned Entire System for a Refund