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Anonymous
Note at which camera ISO gain settings the ISO standard signal-to-noise ratios of 78, 40 and 10 result as these three cut-off values indicate the three image quality standards, Saturation First Excellent & First Acceptable. Remember it is entirely possible that your camera will not achieve the highest saturation image quality speed (S/Nr 78) or the lowest acceptable (S/Nr 10) image quality speed.
My results for my Canon EOS 400d are - 100iso/66.5,200/69, 400/36.75, 800/25.93 and 1600/17.97
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