EXCERPT page containing first few paragraphs. 2019-02-23 22:16:08
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See Optical Quality as Designed vs Built for a general discussion of optical quality. One should not conflate sensor megapixels with image megapixels that are actually resolved by a sensor + optical system + processing.
The Sony RX100 sensor offers huge potential (color, noise, dynamic range are all impressive). But the RX100 lens is a major limitation on what is actually recorded for detail.
The Sony RX100 lens is seriously compromised at most focal lengths and distances as this series and numerous field shots show unequivocally. Medium and long range quality tends to be very impaired; close range quality (portraits at 2-3 feet) seems to be much better, at least at the wide end.
Stopping down does help, with the lens delivering best results at f/5.6, equivalent to f/15 in terms of a 35mm DSLR depth of field.
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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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