EXCERPT page containing first few paragraphs. 2019-09-22 06:06:45
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For all image-forming light, the Loxia 35mm f/2 Biogon offers outstanding overall contrast, at least from f/2.8 on down. But In the field, the one thing that must be avoided is direct sunlight which grazes the front element yet is not light forming part of the image.
Virtually every lens will have issues similar to that shown here, with the sun right at frame edge.
Here, the sun was just above the edge of the frame, as close as it could be without actually including it. Multiple attempts were needed to make an image free of fingers (a hand was used to shade the lens).
The image was shot with the lens hood attached, which is irrelevant to this type of veiling flare behavior since the front lens element is grazed in its entirety by the sun. Even a rectangular lens hood would likely not avail. And this particular example is a worst case example because the background is so dark. Even a Zeiss Otus will show a trace of veiling flare under such conditions, and the Otii are the very best.
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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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- Optical quality analysis of field curvature, focus shift, sharpness, flare, distortion, and performance in the field.
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