EXCERPT page containing first few paragraphs. 2021-12-08 01:50:32
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The Sigma Art lenses in theory should be the pro-grade line. To me, that means well-controlled distortion. This page shows examples of the substantial amount of barrel distortion presented by the Sigma FE 35mm f/1.4 DG DN Art, which I deem excessive for many subjects and mandating correction too often.
Distortion correction for this level of barrel distortion is guaranteed to visibly reduce micro contrast in the outer areas of the frame, at least half of it. Lens sharpness cannot be fairly characterized against other lenses without accounting for this, which makes the MTF chart (already dubious vs the sample I tested) a misrepresentation of final image quality.
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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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