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HDR with color filters, is it of any use?

Astrophotography Filters
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#1 Palmito

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Posted 22 November 2021 - 05:48 PM

Hi All!

 

I was wondering, if there is any use to do HDR on color filters with a mono camera, or is it only useful with Lum filter?

 

Cheers and CS



#2 sharkmelley

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Posted 23 November 2021 - 01:59 AM

If any part of the image taken with the colour filter is saturating then you have lost the colour information.  So in this case HDR is useful.

 

Mark


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#3 Jared

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Posted 23 November 2021 - 02:06 AM

Sure. It’s just that you are much more likely to clip stars (and nebulae) with luminance frames since they pass roughly 2.5x the light of a color filter. Plus, colors can start getting pretty washed out once luminance reaches about 80% of max even if nothing is clipped. Hence, people tend to use the HDR tools on luminance frames more than on RGB frames. That, and the fact that doing HDR on RGB is more work simply because you have more channels.
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