D750 Photographic Dynamic Range (PDR) Adjusted at PhotonsToPhotos

Started Oct 15, 2017 | Discussions thread
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bclaff Veteran Member • Posts: 7,304
D750 Photographic Dynamic Range (PDR) Adjusted at PhotonsToPhotos

At PhotonsToPhotos sensor measurements are always "live".
When new data changes the results then new results are published.
Normally any change is slight and no one notices.

In March of 2017 I republished over 150 Photographic Dynamic Range (PDR) results.
Many values were slightly lower, but these slight changes went unnoticed.

I have determined that the previously published Nikon D750 PDR values were (noticeably) too high; mea culpa (my bad).
I have discovered an error in the initial data collection for PDR for that camera.
Normally PDR data collection errors result in dramatically low PDR values, the error is obvious, and the data rejected. That didn't happen in this case.
New data has been collected and processed.

Thank you to all collaborators around the world for providing the required raw files for analysis over the past 10 years.
If you also want to help (with any camera model) I'd love to hear from you.

I'm highlighting this update in light of the recent release of the D850 since comparisons with the D750 are affected.

How the old and the new PDR values for the D750 compare:

And here's how the comparison between the D850 and D750 now looks :

Note that the maximum D750 PDR is no longer higher than the D850 (by 0.14 stops)
The D750 still acquits itself quite well; particularly below ISO 400 before dual conversion gain kicks in for the D850.

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Bill ( Your trusted source for independent sensor data at PhotonsToPhotos )

Nikon D750 Nikon D850
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