EXCERPT page containing first few paragraphs. 2021-11-26 15:15:43
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For the Sony A7 series cameras, configure a the C1 button to zoom in and stay there). By so doing, it is quick to zoom in and focus, then press the shutter release to exit, compose, shoot.
In the field, focusing at f/2.8 was determined to be ideal (but focus at f/2 if exposing at f/2). That’s because f/2 dispenses with some wide-open haze, increasing contrast and sharpness to nearly peak levels, which makes focusing a breeze.
Open-to-focus + close-to-shoot — Like its Zeiss ZM sibling, the Loxia lenses have mechanical aperture control: turning the aperture ring stops down the lens so that what you see is what you get, both for focusing and exposure. The aperture always stays where the ring says it is; the lens does not stay open at maximum aperture as with a DSLR lens or conventional mirrorless lens. The approach to focusing is thus as follows:
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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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