At 11/3/2019 07:32 AM, I wrote:
>At 11/3/2019 01:55 AM, Philippe wrote:
>
>>How do you get that amount of noise at ISO 800 ?
>>
>>Should be clean from the start on a Sony, should it not?
>>
>>Amities
>>
>>Philippe
>
>It was shot at -1EV, and boosted in ACR by +2EV, not to mention boosting the
>blacks (ACR shadows +80, blacks +50). Not sure how those numbers translate
>into extra EV boosting. The images were quite dark unprocessed. Sony tends to
>optimize for highlights vs Nikon for shadows.
>
>Clearly if I shot at 0EV with longer shutter it would also have less noise.
>
>Interesting comparison:
>https://www.dpreview.com/news/4302149407/sony-a7r-iii-dynamic-range-improved-nearly-matches-chart-topping-nikon-d850
>
>Sometimes I get lost in the numbers, so real world examples are better. With
>the Denoise programs and Sharpening programs, the final result can defy lens
>resolution and camera noise performance.
If interested here is a technical description of the HGC mode at ISO 640 on
A7x's.
http://www.photonstophotos.net/Aptina/DR-Pix_WhitePaper.pdf
WayneS
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