BatchPreprocessing and Canon 'Dual Pixel Raw' Setting

[jimwaters]

The Diagnostic Script for the BatchPreprocessing Script needs to check for Canon ‘Dual Pixel Raw’ CR2 images.  If the cameras have this turned ON an error message needs to be displayed.

See problem report at this link.
https://pixinsight.com/forum/index.php?topic=11672.0

[msmythers]

PI uses Dave Coffin's dcraw to decode DSLR raw images. I was looking at the list of supported cameras by dcraw and I did not see the Canon 5DMkIV that you listed in the other posting as a supported camera. Maybe I missed your camera in the list or there is an updated list somewhere else. Here is a link to the dcraw site.
https://www.cybercom.net/~dcoffin/dcraw/ 



Mike

[jimwaters]

I use Adobe LightRoom to process daytime pic's.  I downloaded DCRAW as part of that image processing some time ago.  Does PI use its own standalone version of DCRAW?

The 5D4 isn't on the cybercom.net list.

[Juan Conejero]

Hi Jim,

As Mike has pointed out, dcraw does not support your camera yet. It does not support the 'dual pixel raw' feature either. Since our DSLR_RAW module uses dcraw internally to support digital camera formats, we cannot implement the features you are requesting. So there is no bug here, just a lack of the functionality you are describing.

I'll try to contact Dave Coffin to see if I can get some information about the next version of dcraw. The current version was released in May 2016.

[Juan Conejero]

I've got bad and good news regarding this issue.

The bad news first: it looks like dcraw has been discontinued. The latest version was released in May 2016, and it added little to the previous one, released almost one year before, back in 2015.

The good news: fortunately, we have LibRaw, which is a live open-source project providing all of dcraw's functionality, and much more. So I am starting to work on a stable integration of LibRaw in our PCL development framework. The next version of our DSLR_RAW support module won't depend on dcraw anymore. Instead, it will integrate LibRaw and hence will support new cameras now and in the foreseeable future. It will also come with new debayering algorithms. So stay tuned.

And by the way, an additional good news: the DSLR_RAW module will be released as an open-source product from now on. This is consistent with the new open-source policy I described when I announced version 1.8.5, where my goal is to have all PixInsight modules and tools released open-source in the medium term.

[Can Poyrazoğlu]

Just as a side note, even though dcraw directly supports 5D Mark IV, I use 5D Mark IV and I can confirm that PixInsight (therefore dcraw) opens 5D Mark IV CR2 RAWs perfectly as long as it's not dual pixel raw. So as a workaround, try shooting non-dual pixel raw and PixInsight will open them.

[Juan Conejero]

Hi all,

Just to keep you informed, we have a new LibRaw-based RAW module that supports Canon dual pixel raw frames:

https://pixinsight.com/forum/index.php?topic=12126.0

Thank you for your patience!