EXCERPT page containing first few paragraphs. 2021-04-14 17:09:09
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This page evaluates low ISO noise with the Nikon D850 versus its D810 predecessor, long renowned for outstanding image quality and very low noise at ISO 64. My conclusions follow at the end for those who want a quick answer.
Also examined is how much benefit accrues in using “Lo” ISO values on each camera. These values are not real ISOs, and deliver a significantly different tonal scale. In essence, they simply record brightness without any gamma curve. They require special care during exposure to avoid blowing out highlights.
A few questions that I wanted answered:
- Is the Nikon D850 at ISO 64 superior in per pixel noise to the D810, or is it perhaps about the same relative to the pixel count? Ditto for pseudo-ISO 31 (D850) vs pseudo-ISO 50 (D810).
- Can a Nikon D810 at pseudo-ISO 50 equal a Nikon D850 at ISO 64?
- What are the negative effects of using the pseudo ISO “Lo” settings versus real ISO.
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