more pixels are better!

Started Dec 14, 2008 | Discussions thread
bobn2
bobn2 Forum Pro • Posts: 70,377
Re: SNR vs exposure

Graystar wrote:

bobn2 wrote:

I didn't say depends solely on sensor size and efficiency - that
would be silly. The floor of the DR is the read noise. Double that
between cameras (and it varies much more than that) and you have your
stop in DR.

So you're saying what...that the LX3 doesn't do any better in
highlights than the G10? It's all shadow detail?

Erm, no. DR gives a range of tone from 'highlight' to 'shadow'. The brightest 'highlight' you can render depends on the per-area FWC (Emil had a much better term for it, but I can't remember it now) and the darkest shadow depends on the noise. Exactly how the range of tonality of the original image is mapped into that space depends on the exposure index of the camera, and as we discover, under ISO standards the manufacturers can do that in any way they please.

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Bob

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