EXCERPT page containing first few paragraphs. 2019-10-14 19:39:11
UA_SEARCH_BOT_null @ 22.214.171.124
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.
Article continues for subscribers...
Diglloyd Advanced DSLR is by yearly subscription. Subscribe now for about 16 cents a day ($60/year).
BEST DEAL: get full access to ALL 8 PUBLICATIONS for only 68 cents a day ($249.95)!
Diglloyd DAP is DSLR-oriented, but also contains workflow and other topics. Much of the focus is on Canon and Nikon but also Pentax and Pentax medium format.
Special emphasis is placed on lens evaluation, focusing on Canon and Nikon and Sigma lenses, but with a few others like Rokinon/Samyang.
- Make better images by learning how to get the best results right away.
- Save money by choosing the right lens for your needs the first time, particularly some of the new Sigma Art lenses vs Nikon and Canon.
- Workflow discusses image organization, raw conversion and post processing. Many examples show processing parameters for direct insight into how the image was converted.
- Jaw-dropping image quality found nowhere else utilizing Retina-grade images up to full camera resolution, plus large crops [past 2 years or so].
- Real world examples with insights found nowhere else. Make sharper images just by understanding lens behavior you won’t read about elsewhere.
- 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.