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Archive 2024 · Dxo pureraw and stacked images question

  
 
gus6464
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p.1 #1 · Dxo pureraw and stacked images question


When doing an astrophotography stack in Affinity 2 should you stack them first and then run the single result through pureraw or vice versa (run all the subs through dxo and then stack)?


Feb 26, 2024 at 05:29 PM
ruthenium
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p.1 #2 · Dxo pureraw and stacked images question


DxO Photolab requires original and genuine raw files for DeepPRIME denoising. I am not familiar with DxO PureRAW but I expect the requirements to be the same as in PL.



Feb 26, 2024 at 05:53 PM
exdeejjjaaaa
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p.1 #3 · Dxo pureraw and stacked images question


if your stacking program will output NON demosaicked DNG file then you can feed it to DxO PL and poorraw - just make sure to keep exif tags as if it was just one original raw converted to non linear DNG with something like Adobe DNG converter ... then DxO code will digest it w/o any issues... I have no issues to stack ( not for asto ) multiple raw files into one donor non demosaicked DNG ( replacing the image data ) with Matlab and feeding that to DxO PL


Feb 26, 2024 at 06:34 PM
exdeejjjaaaa
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p.1 #4 · Dxo pureraw and stacked images question


ruthenium wrote:
DxO Photolab requires original and genuine raw files for DeepPRIME denoising.


not so , synthetic DNG works just fine for a long as you have relevant exif/DNG tags pretending to be from the supported camera model




Feb 26, 2024 at 06:36 PM
gus6464
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p.1 #5 · Dxo pureraw and stacked images question


exdeejjjaaaa wrote:
if your stacking program will output NON demosaicked DNG file then you can feed it to DxO PL and poorraw - just make sure to keep exif tags as if it was just one original raw converted to non linear DNG with something like Adobe DNG converter ... then DxO code will digest it w/o any issues... I have no issues to stack ( not for asto ) multiple raw files into one donor non demosaicked DNG ( replacing the image data ) with Matlab and feeding that to DxO PL


Curious why you call it poorraw? Is there something better out there for around the same price or less?



Feb 26, 2024 at 07:32 PM
ruthenium
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p.1 #6 · Dxo pureraw and stacked images question


exdeejjjaaaa wrote:
not so , synthetic DNG works just fine for a long as you have relevant exif/DNG tags pretending to be from the supported camera model



I have no relevant experience but I trust you are right and might have said "DxO Photolab requires original and genuine, or pretending to be genuine, raw files for DeepPRIME denoising.
I am not quite sure why DxO demands the raw files to be original and genuing. Even if DeepPRIME doesn't work as well on the pretended genuine files as it does on the genuine one, this might still be an option better than no option at all (with a suitable warning).
I recently ran into a problem while processing raw files obtained with my A1 in the APS-C cropped mode. The most recent updated makes this impossible to process such files in PL7. I complained about this, and received this response "You have recently updated to DxO PhotoLab 7.4 since then you can no longer edit some of your images with the message that Sony mRAW and sRAW is not supported." That didn't make sense to me at first, because the image quality in my camera was set to lossless comp L, not mRAW or sRAW that I knew were not supported in PL7. Apparently the problem is that the Lossless comp L is not compatible with the APS-C crop mode in A1. The "A1 Help Guide" doesn't explain what happens, but I suspect that when switched to the crop mode the camera probably switches to mRAW. I still don't know for sure. But this is a different subject...



Feb 26, 2024 at 08:13 PM
exdeejjjaaaa
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p.1 #7 · Dxo pureraw and stacked images question


gus6464 wrote:
Curious why you call it poorraw?



because it is - you are lacking a lot of control over conversion available in PhotoLab ... now you might not care, but I do ...



Feb 26, 2024 at 10:07 PM
exdeejjjaaaa
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p.1 #8 · Dxo pureraw and stacked images question


ruthenium wrote:
APS-C cropped mode.


there was a lot of noise about this in various forums ... one post was interesting = https://forum.dxo.com/t/pl6-no-longer-processes-images-shot-in-aps-c-crop-mode/37034/33

granted it was for PL6 upgrade, but if it will be fixed for PL6 then surely for PL7 too




Feb 26, 2024 at 10:11 PM
ruthenium
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p.1 #9 · Dxo pureraw and stacked images question


exdeejjjaaaa wrote:
there was a lot of noise about this in various forums ... one post was interesting = https://forum.dxo.com/t/pl6-no-longer-processes-images-shot-in-aps-c-crop-mode/37034/33

granted it was for PL6 upgrade, but if it will be fixed for PL6 then surely for PL7 too


Thank you!
It is the same problem in PL7, which origin I understood correctly, it seems:
A quote from the thread you pointed me to:
"lRaw (compressed large) in apsc: Does Not Work because camera auto switches to mRaw.
Uncompressed apsc and Uncompressed full frame: Work"

Basically, the problem here is not the cropped format, but the camera switching from compressed large to medium large (mRAW) which DxO claims is not a genuing raw file and thus doesn't want to deal with.
I guess I should try shooting in uncompressed raw in the future if I want to keep using the cropped mode on my A1. An alternative is to crop in post, of course.



Feb 26, 2024 at 11:26 PM
gus6464
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p.1 #10 · Dxo pureraw and stacked images question


Ok so here's a trickier question.

When I shoot deep space objects with my long telescope my astro computer saves the files as FITS format. Now, affinity can read this format just fine and do the astro stacking. If I export the finished stacked file as a DNG that keeps all the same exif data from my Canon RP will PR3 read it and do the denoise?



Feb 27, 2024 at 02:31 PM
exdeejjjaaaa
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p.1 #11 · Dxo pureraw and stacked images question


gus6464 wrote:
Ok so here's a trickier question.

When I shoot deep space objects with my long telescope my astro computer saves the files as FITS format. Now, affinity can read this format just fine and do the astro stacking. If I export the finished stacked file as a DNG that keeps all the same exif data from my Canon RP will PR3 read it and do the denoise?


post your DNG file and we shall test if it can be outfitted with RP metadata... that simple



Feb 27, 2024 at 05:59 PM
exdeejjjaaaa
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p.1 #12 · Dxo pureraw and stacked images question


ruthenium wrote:
Basically, the problem here is not the cropped format, but the camera switching from compressed large to medium large (mRAW) which DxO claims is not a genuing raw file and thus doesn't want to deal with.


as far I as remember what was discussed there and in other topics - DxO was dealing just fine w/o any issues with those mRAW files and the all of sudden stopped at some version update , so people got upset ... because regardless of the claims DxO for a while had no issues




Feb 27, 2024 at 06:02 PM





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