EXCERPT page containing first few paragraphs. 2019-02-22 05:34:36
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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).
Accordingly the A7R is subject to image blur from shutter vibration. Here the native Sony FE 55mm f1.8 Sonnar is tested, which field shots show to be an exceptional performer.
With long lenses clearly showing vibration issues on the A7R (none with the A7), the question arises as to whether shorter focal lengths are affected. Shutter shock does not just go away because of focal length, and every camera + lens combination can exhibit a different response to a shock wave.
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Diglloyd Guide to Mirrorless is by yearly subscription. Subscribe now for about 25 cents a day ($90/year).
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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.
- Make better images by learning how to get the best results right away. For example, the best way to set up your Sony camera.
- Save money by choosing the right lens for your needs the first time, particularly with the numerous lenses available for Sony.
- Make better images, a sort of “cheat sheet” saving yourself months or years of ad-hoc learning—best practices and how-to and processing parameters are discussed and shown.
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- Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
- 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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