EXCERPT page containing first few paragraphs. 2021-11-26 15:54:28
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Distortion of ~0.25% is very low for a 50mm lens, in most cases this means no need to correct it. Most manufacturers would term this “zero or near zero distortion”.
This level of distortion is far lower than the distortion of the Zeiss ZF.2 / ZE 50mm f/1.4 Planar (~2%) and about half the distortion of the Zeiss ZF.2 / ZE 50mm f/2 Makro-Planar (~0.5%). Also, it is only slightly more than the very best Leica M 50mm f/2 designs.
The low distortion is interesting in that the Zeiss ZM 50mm f/2 Planar shows distortion of about 1.5%, but the Loxia design reduces that by a factor of six or so, showing that the design has been modified versus the rangefinder design.
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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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