DxOMark Tonal Range Specification

Started Dec 19, 2012 | Discussions thread
DSPographer
Senior MemberPosts: 2,419Gear list
Like?
Re: DxOMark Signal for SNR
In reply to cpw, Dec 21, 2012

I think the definition of signal for a DXOmark SNR is just the mean value of the count at the illumination needed for that mean value. Their noise definition includes read noise, shot noise, and PRNU. So, their full SNR plot plots the SNR at many mean count values: from an SNR of 0 dB to full count. The SNR 18% value reported on the second tab plot is just the SNR from the full SNR plot at 18% of full scale count for each ISO.

 DSPographer's gear list:DSPographer's gear list
Canon PowerShot G7 X Canon EOS 5D Mark II Canon EF 24mm f/2.8 Canon EF 50mm f/1.8 II Canon EF 200mm f/2.8L II USM +4 more
Reply   Reply with quote   Complain
Post (hide subjects)Posted by
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark post MMy threads
Color scheme? Blue / Yellow