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Why Rely Solely on DxOMark ?

Started Apr 10, 2015 | Discussions thread
OP bclaff Forum Pro • Posts: 13,925
Re: Why Rely Solely on DxOMark ?
1

viking79 wrote:

DxOMark has a level of consistency in results that I haven't seen elsewhere.

I could argue that my results are even more consistent than those at DxOMark; but not in any important way.
My results serve as a valuable "sanity check" for some people.
I test some cameras that they don't.
I test intermediate ISO settings, when available, which they don't.

They perform tests that I don't, and I perform tests that they don't.
I provide some of their data (a la sensorgen) at my site along with my data because both are useful.

Do you account for discrepancies between ISO values indicated by manufacturer, and actual ISO value? I.e., if you don't it could shift the curve left or right and it appears that is happening with cameras like the E-M5, which doesn't really have the same dynamic range at a photograph level as a D3x.

I plot versus ISO Setting rather than "Measured" ISO.
The discrepancies you talk about are normally quite small.
And in any case, dynamic range is not increased/decreased, the midpoint is shifted between how much of the dynamic range is "highlight" versus how much is "shadow".

However, if you are satisfied with DxOMark as the sole provider of sensor characteristics that's OK with me!

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