EXCERPT page containing first few paragraphs. 2021-06-20 06:09:45
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This page uses a SpyderCHECKER® color checker card to evaluate the white balance and tint needed in mid-day sun for the Sigma 70mm f/2.8 DG Macro Art, using Photoshop/ACR raw file conversion.
The following process was followed to ensure the best possible neutrality of the grayscale (black to white) patches on the color card:
- Use click white balance as a starting point.
- Perform, twice, a 15 pixel Gaussian Blur. In Lab mode, check for neutral tint ('a' channel) and neutral color ('b' channel).
- Adjust color temperature and tint; repeat steps 2 and 3 until the best possible neutrality is achieved.
Evaluation: Mid-Day Sunlight, 500' elevation
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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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