>>3503030yea that looks better. according to the google youtube jesus there are a few ways you can do this in darktable, besides using the lens correction profiles which are based on the open source Lensfun
http://lensfun.sourceforge.net/lenslist/https://www.youtube.com/watch?v=cruud_MEr_U i turned on the defringing module and left it at defaults, which took about 90 seconds, but your 2 second photoshop might still look better. i can't really tell the difference because though im blind and fat