I am doing astrophotography with a Canon R5.
Normally I use Raw Therapee, but it does not support R5 .CR3 files. So I used the Adobe DNG converter to convert CR3 --> DNG. Then I used Raw Therapee to make a linear TIFF file.
In order to use Siril for image stacking, I am currently trying to use Siril to convert the TIFF files to FITS files. It is very slow - it has taken about 138 seconds for each TIFF file. I have about 1000 of the files to process, and in the last 18 hours, it has done 471.
This is on a very fast machine reading to and from SSD drives over USB 3. So it should be much faster.
Raw Therapee does the full raw conversion - with debayering, lens profile correction and more - in much less time. Yet that is doing a substantial calculation. Going from TIFF to FITS is just pushing bits around.
There must be a software tool out there that would convert from TIFF to FITS faster than this. Do you have any suggestions?
Alternatively, I wish Raw Therapee supported FITS output.
Siril has its own way of processing DSLR RAW files - but Raw Therapee has a lot more features in this regard - particularly the lens profile corrections. I use Siril when processing astrophotos from dedicated astronomy cameras but Raw Therapee is better when going from a conventional camera.