EXCERPT page containing first few paragraphs. 2022-05-22 05:04:04
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The Sony A7R lacks an electronic first curtain (EFC) shutter found in its sibling, the 24MP Sony A7 (electronic first curtain shutter = zero vibration exposures).
With long lenses showing obvious vibration issues on the A7R (none with the A7), there is an incentive to dismiss the vibration as non-existent with shorter focal length lenses. But the laws of inertia and physics do not allow a behavior to disappear, only to be less obvious. And as the Dolls assessment and Red Barn series show, the effects are visible even at 55mm.
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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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