EXCERPT page containing first few paragraphs. 2019-09-18 20:09:17
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This page shows the performance of lens plus camera at fairly close range across the f/2.8 - f/16— sharpness, effects of diffraction, general image quality. Focus shift is also assessed.
Note that results at distance might be at some variance with the results at close range.
Same comments as for the color gamut and reds and blues as with the DP1 Merrill on this same test scene.
Focusing— the DP2 Merrill autofocus was unable to cope with this scene; autofocus kept focusing behind Miss Checkerboard (the sensor apparently covers too large a focus area). Switching to manual focus, it turns out that the stepper motor focusing is good only to ~2cm or so of accuracy. UPDATE: at the time I shot this, I was unaware of spot focus, which just nails things in general.
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Diglloyd Guide to Mirrorless offers comprehensive integrated coverage of most APS-C and full frame mirrorless cameras and lenses.
Special emphasis is placed on Sony full-frame, including Sony lenses and the high performance Zeiss Batis and Zeiss Loxia lenses plus Rokinon/Samyang and others. Fujifilm X, Olympus and Panasonic M4/3, Sigma dp Merrill and dp/sd Quattro are also covered in depth. Years in the making, it offers a wealth of material for choosing and using a mirrorless camera.
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- Aperture series from wide open through stopped down, showing the full range of lens performance and bokeh.
- Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.
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