How does the D3 achieve such high ISO?

Started Feb 17, 2008 | Discussions thread
Marianne Oelund Veteran Member • Posts: 7,788
You can do high-ISO boost yourself

SDRebel wrote:

Given what I paid for my 1Ds3, I'd like to think that it outperforms
every camera on the market in all respects.

It is not possible for any one camera to be the best in all respects. You have the highest-resolution 35mm-format dSLR currently available; it is not reasonable to expect it to also be the best high-sensitivity camera. That is an unavoidable tradeoff.

Anyway, my own initial testing of ISO 3200 leads me to believe that
for night urban work of people on the streets, etc., that the results
are perfectly usable. I'd just like Canon to give me the opportunity
to set the camera at the 6400, 12800, and 25600 choices offered by
the D3 and thereby allow me to decide if the results are acceptable
and usable.

Once you are above unity-gain ISO, you can simulate higher sensitivities simply by underexposing, then adding exposure compensation back in during post. You will lose nothing in doing this, compared to what your camera would give you if Canon had designed in the higher ISO settings.

Don't hesitate to experiment with this. I'm sure you'll find the results interesting; you might even want to share some of them with us.

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