This is vignetting + This is vignetting + distorsion. LibRaw does not have internal lens database, so no way to correct this here is RAW rendering: https://www.dropbox.com/s/oh4qoxuoiphj87v/Screenshot%202017-12-27%2010.4... And embedded JPEG: https://www.dropbox.com/s/9zfo4sba6m9bvbf/Screenshot%202017-12-27%2010.4... You may try to use Lensfun, most of Canon fixed-camera lenses listed as 'supported': http://lensfun.sourceforge.net/lenslist/ -- Alex Tutubalin @LibRaw LLC reply
This is vignetting + distorsion.
LibRaw does not have internal lens database, so no way to correct this
here is RAW rendering: https://www.dropbox.com/s/oh4qoxuoiphj87v/Screenshot%202017-12-27%2010.4...
And embedded JPEG: https://www.dropbox.com/s/9zfo4sba6m9bvbf/Screenshot%202017-12-27%2010.4...
You may try to use Lensfun, most of Canon fixed-camera lenses listed as 'supported': http://lensfun.sourceforge.net/lenslist/