Serious doubts on the D7100 at high ISO

Started Mar 25, 2013 | Discussions thread
mosswings
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Re: Another picture for your comments
In reply to fotolopithecus, Mar 26, 2013

fotolopithecus wrote:

mosswings wrote:

For us to get 2 stops of noise floor performance, we'd have to go from the 5e- of the D300 to just about 1.2e-. We got to around 1.9e- in the D7100. That's still pretty fabulous, but it doesn't help when looking at 100% crops of a 100% denser image. To be fair, we have to downsize (not crop) to the same image size before comparing.

That being the case mossy, can you imagine what they could have done with noise if they had just left the D7100 with 16, or even 18mps?

I know what you're getting at, but we already know the answer to that question: what the D800 can do: 12.7 EV, 3 e-, exactly the same pixel size as the D7000.  The D5200 gets 12.7 EV, 2.9 e-, in a pixel that's 30% smaller (ISO 200).  This is borne out in the pixel-level measurements.

So the answer appears to be: put a sensor with better performing bulk performance in there.  And what might that be?  A Sony product, perhaps.  The 24MP NEX-7 sensor doesn't do as well as the 16MP, so the better candidate would be the next-gen Sony EXMOR 24MP sensor, supposedly slated for the NEX-7N, and supposedly 1/2 stop better than its predecessor.

 mosswings's gear list:mosswings's gear list
Olympus XZ-1 Nikon D90 Nikon D7100 Nikon AF-S DX Nikkor 18-105mm f/3.5-5.6G ED VR Nikon AF-S Nikkor 70-300mm f/4.5-5.6G VR +1 more
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