Author Topic: Issues with canon 80D raws  (Read 2190 times)

Offline Saturne

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Issues with canon 80D raws
« on: 2017 November 14 11:47:30 »
I've tried to help a friend with image processing and had some weird issues. I'm not sure why, but PI can't read the right resolution for the image and it looks like a scrambled jigsaw puzzle (see attached images). Does anybody have a fix for that problem?

Some extra info:
- The dslr is a canon 80D.
- This issue doesn't happen with other canon dslr
- This issue also happens in DSS
- The JPEG preview is unaffected

Offline pfile

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Re: Issues with canon 80D raws
« Reply #1 on: 2017 November 14 13:44:03 »
i can not comment directly about the 80D since i don't have one to try. dunno if there is some camera setting that's causing an incompatibility or if DCRAW simply does not support the 80D.

but each generation of canon cameras brings a slightly different CR2 format. for years Dave Coffin would reverse engineer these new CR2 formats and include support in dcraw.c, which is what PI uses to open camera raw files. Dave Coffin recently announced he's not going to maintain dcraw.c, so juan has decided to switch to libRaw, which is an open source project focused on the same problem. from his forum posts i understand that he's working on rolling libRaw into the next release of PI.

rob

Offline bulrichl

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Re: Issues with canon 80D raws
« Reply #2 on: 2017 November 14 14:24:42 »
If you have 'Dual Pixel Raw' activated in the camera, turn it off. The raw development software dcraw currently used by PixInsight does not support Dual Pixel Raw mode. That means raws that were shot with Dual Pixel Raw activated in the camera cannot be processed with PixInsight at present.

See:
https://pixinsight.com/forum/index.php?topic=11672
https://pixinsight.com/forum/index.php?topic=11674
https://pixinsight.com/forum/index.php?topic=11675

Maybe that will change when the announced New DSLR_RAW module based on LibRaw has been accomplished:
https://pixinsight.com/forum/index.php?topic=11726


Bernd

Offline Saturne

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Re: Issues with canon 80D raws
« Reply #3 on: 2017 November 15 22:29:16 »
Thanks for your answer. I've been able to check his camera and dual pixel raw was enabled. Disabling it solved all the issues.