Focusing Accuracy (Case Studies)
Focusing accuracy and errors..
See also: lens mount
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2019-07-02 Reader Comment: Lens Adaptability, Lens Adapters
2019-02-25 Sigma Announces 11 Lenses for L-Mount (Panasonic S1 and Panasonic S1R) + Reader Comments
2018-09-26 The Leica/Panasonic/Sigma Alliance L-Mount Alliance
2018-09-26 Sigma Full-Frame Foveon-Sensor Camera with L-Mount
2018-09-13 Sigma DG HSM Art Lenses for Sony Mirrorless: Ergonomic and Other Concerns
2018-09-05 Canon EOS R Mirrorless System Announced
2018-09-01 Sigma DG HSM Art Lenses on Sony Mirrorless, and Implications for Nikon Z7 + Nikon FTZ lens Adapter
2018-08-30 Nikon Z7: Optical Design vs the Large-Diameter Z-Mount and Short 16mm Flange Focal Distance
2017-12-18 Update on Nikon D850 Flange Focal Distance
Focusing accuracy and errors..
Adapting lenses delivers degraded results in most cases..
Questions and answers on photography and computers and more..
World’s best mid-range telephoto lens..
All around razor sharp performer..
2019-07-02 Reader Comment: Lens Adaptability, Lens Adapters
2019-02-25 Sigma Announces 11 Lenses for L-Mount (Panasonic S1 and Panasonic S1R) + Reader Comments
2018-09-26 The Leica/Panasonic/Sigma Alliance L-Mount Alliance
2018-09-26 Sigma Full-Frame Foveon-Sensor Camera with L-Mount
2018-09-13 Sigma DG HSM Art Lenses for Sony Mirrorless: Ergonomic and Other Concerns
2018-09-05 Canon EOS R Mirrorless System Announced
2018-09-01 Sigma DG HSM Art Lenses on Sony Mirrorless, and Implications for Nikon Z7 + Nikon FTZ lens Adapter
2018-08-30 Nikon Z7: Optical Design vs the Large-Diameter Z-Mount and Short 16mm Flange Focal Distance
2017-12-18 Update on Nikon D850 Flange Focal Distance
2017-11-29 Nikon D850: Back from Nikon for Checkup on Flange Focal Distance Issue
2017-11-01 Nikon D850: Flange Focal Distance is WAY Off (2nd Sample)
2017-10-28 Nikon D850: the 2nd Sample is Off Also, both Skewed and Bad Flange Focal Distance
2017-10-17 Nikon D850, Priorities
2017-10-12 Nikon D850: Mine Also Has a Problematic Flange Focal Distance (way past infinity mark).
2012-01-12 Fuji X-Pro1 — Fujinon XF Lenses on X Mount
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![]() $450 SAVE $100 = 18.0% Sigma 24mm f/3.5 DG DN Contemporary Lens (Sony E) IN STOCK in Lenses: Mirrorless
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