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EM1 / GX7 Who will upgrade to a bit better sensor ? (explain why if you want) Poll.

Started Sep 10, 2013 | Polls thread
Bob Meyer Veteran Member • Posts: 5,375
DXO "ISO" is wrong

Franka T.L. wrote:

The key motto here is that delivering of image quality along all the more common shooting environment. So the figure really do not tell the whole story. So yes while the figure might said 12.5 stop of DR, what it do not said is how that DR drop between using base ISO vs using say ISO 400, 800 or how its real ISO. For that I do thank DxO cause their test result do allow me to dig into the data better and allow me to made some better info from the test.

If you're relying on DXO to determine "real" ISO, then you don't understand what DXO is doing. It's DXO's definition of ISO that is non-standard. Every current m43 camera conforms perfectly (within 1/6 stop, which is what the standard calls for) to the international standard for determining ISO.

I bet no more than 1% of those who run around quoting DXO results to justify their decisions really understand what DXO is doing.

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