EXCERPT page containing first few paragraphs. 2021-12-08 21:14:26
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This page shows distortion examples with the Canon RF 15-35mm f/2.8L IS USM at various focal lengths.
Canon calls it a 14mm to 35mm lens, but the truth is that the 14mm is given up to distortion correction and ends up being about the same field of view as its 15-35mm sibling. More than a little misleading. However, the midrange and 35mm end are excellent in terms of distortion.
When evaluating the images/crop on a Retina display at 220 ppi, it will be harder to see differences. Think of this as a small print. When evaluating on a lower-ppi display like the 110 ppi NEC PA302W, the rubber meets the road as to what a large print would be like. See also pixel density.
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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.
Want a preview? Click on any page below to see an excerpt as well as extensive blog coverage, for example on Sony.