D7200 HPS (hot pixel suppression) news

Started Dec 8, 2015 | Discussions thread
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Bernard Delley Senior Member • Posts: 1,442
D7200 HPS (hot pixel suppression) news
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The D7200 appears to boast a new HPS method. Like as some previous models it kicks in at exposures longer than 1/5 s, and cannot be user controlled. It appears to allow for more peaky star images and it is quite effective at removing hot pixels.

This is a follow up on earlier HPS analysis by Marianne Oelund: In-camera processing of long-exposure RAW data and myself: hot-pixel suppression in D800 and D4  and after introduction of a nonzero black level in Nikon DSLR there was an issue with HPS The Story of One Hot D810 Pixel...   The present status for D810 is unknown to me, as I currently have no access to a sample of this camera.

The following graph shows cumulative statistics over all 24 M raw pixels of a black frame at ISO 1600 at 1/5s. There were very few hot pixels. Some come with brightness even way more than raw number 1000.

At 1/5s the HPS is active and removes the hot pixels. The cumulative noise statistics is the best I have seen so far at ISO1600 on any camera.

Nikon D4 Nikon D7200 Nikon D800 Nikon D810
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