The Joy of Pixel Density

Started Jul 13, 2008 | Discussions thread
OP John Sheehy Forum Pro • Posts: 21,722
Re: 400D Dynamic range not sensor limited

ejmartin wrote:

I think this may be what you're looking for:

http://www.pbase.com/jps_photo/image/74020772

moreover, it's the test that you and I think is more appropriate (at
ISO 1600). The only drawback is that the 10D read noise is about 9
electrons, about a stop worse than the best current models which are
around 4 electrons. So imagine the 10D image with half the noise...

And also imagine that I had chosen the whitepoints better and the 10D crops were brighter, in which case they would show more noise than they do. Also, I learned after I did this that the FZ50 has a botched PGA, which adds extra absolute noise, which makes 1600 worse than 100 at -4EC. Absolute read noise seems lowest at IS0 200 with the FZ50, and at 800 through 3200 on the 10D.

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John

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ck3
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