EXCERPT page containing first few paragraphs. 2019-02-15 12:13:14
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The 12- megapixel full frame sensor in the Sony A7S II brings with it expectations of ultra-clean imagery. This outdoors scene is a mashup of real world performance challenges into one “how well does it actually work” test. Because that is the bottom line: except for 4K video, there is no rational reason to go with a 12-megapixel camera unless its offers unbeatable high ISO and long exposure performance.
- A mix of cyan-tinted lighting (LED source) which has been corrected in raw conversion to neutral (this makes the fire look magenta).
- Contrast control in raw conversion: +100 shadow boost with some highlight reduction to tame the contrast range (contrast boost added to restore some contrast).
- ISO series from ISO 100 to ISO 410000 both without and with chroma noise reduction.
- Ambient temperature was 19°F / -7°C. This reduces certain types of sensor noise, and so this low temperature favors the camera greatly versus room temperature.
- Frames were shot one after another, so if the camera has a heat buildup issue with continued use (just as it would with video), then this is highly relevant to some types of real-world use.
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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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