Re: Good News: Ubuntu Linux 22.04 LTS supports Canon CR3 RAW!!
1
Hello...
Thank you for this tip.
Till Kamppeter wrote:
Fresh news right from Canonical: I am not only the leader of the OpenPrinting project for 22 years and therefore the printing guru for all Linux, Unix, and alike operating systems, but therefore also employed at Canonical, in the Desktop Team. And one of my colleagues has fixed the exiv2 package (RAW decoding library) so that the CR3 format is supported now, in Ubuntu 22.04 LTS (Jammy Jellyfish) which will get released next week, on Thursday, April 21, 2022!
I have tested with both DarkTable and RawTherapee and it actually works!
This should especially cover cameras like the G5X Mark II (my camera), the G7X Mark III, ...
Note that there is no automatic lens distortion correction for most cameras, as the correction coefficients for the lenses are not available. This is especially a problem as in full wide angle the zoom lenses of the newer PowerShots are more fish eyes than rectiliniar lenses and the corners of the camera sensor are not covered.
But at least in RawTherapee I have found an easy-to-manage solution for this: This application allows for manual distortion correction by a slider and together with this slider there is a genius trick, a button for setting this slider automatically and to do so, it simply matches the RAW image with the embedded JPEG preview. This is a great solution for the many lenses which are not registered, especially super zoom lenses. You find it in the RAW/Image editor under the geometry correction (drawing tools icon), "Distortion Correction", "Automatic". If it does not perfectly hit, you can slightly adjust the value.
I hope many of you will enjoy their Canon camera much more now.
Till