Photographic Dynamic Range (PDR) is a More Useful Measure than the DxOMark Landscape Score

Started Apr 17, 2015 | Discussions thread
Detail Man
Detail Man Forum Pro • Posts: 17,073
Re: Photographic Dynamic Range (PDR) is a More Useful Measure than the DxOMark Landscape Score

Francois2 wrote:

Detail Man wrote:

bclaff wrote:

Detail Man wrote:

bclaff wrote:

PDR has scaled better with shifting technology.

Would not methods such as the "PDR" method (using much higher SNRs) all seem to "scale better" ?

I think any similar method with an SNR criteria "reasonably" above 1 would be well behaved.
In the cases presented above the criteria is SNR = 4; I'm not sure I'd classify that as "much higher".

Nor would I.

However, it would surprise me if at SNR=26 dB (a linear factor of 20), sensor Readout/Dark noise components (these days) were not quite effectively "numerically swamped" by Photon Shot Noise.

I think that you have chosen the criteria of SNR=20 since long.

Did you change it suddenly ? But why ?

I am simply here noting that it seems your inquiry is (presumably) directed specifically to Bill Claff.

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