Moon Maid's sensor comparison

Started Feb 29, 2012 | Discussions thread
rhlpetrus Forum Pro • Posts: 25,860
Re: You said you don't like it ... (and ISO100?)

Kaj E wrote:

rhlpetrus wrote:

Thanks a lot, very instructive and quite in line what we had expected. One way to check the "stops" difference is to plot, say, ISO6400 for D4 and various ISOs for D3s and check which one matches the 6400 from D4. That would be the "ISO stops" advantage of the D4 at ISO6400 over D3s in SNR. What do you think?

Renato, the point is that the difference in stops is different at different EVs.
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Yes and no. If curves are within 1/3 EV of each other along a wide enough range, you may consider it a tie. Anyway, when people estimate "such and such stops above/below", it's just that, a rough estimate looking at an image in overall terms, usually looking for noise in some midtone smooth area.
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Renato.
http://www.flickr.com/photos/rhlpedrosa/
OnExposure member
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