EXCERPT page containing first few paragraphs. 2019-09-18 12:03:07
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This aperture series show us the X Vario lens performance, but also shows clear limits to the sensor dynamic range in an outdoor scene.
Shot at 30.7mm zoom setting (46mm full-frame equivalent field of view). ISO 100.
Examination of the raw file using RawDigger shows that this example exceeds the dynamic range of the sensor: shadows are OK, but highlights (cloud detail) is gone and cannot be recovered; it is blown-out in all three color channels. It is a difficult scene; there are few mid-tones, mainly it is dark tones and bright highlights with not much in-between.
The ideal camera has at least another stop or two of dynamic range (e.g., the Sony RX1R). With the X Vario, care is needed with exposure as many field shots made clear, this one being just one example suffering from highlight loss.
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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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