I recently tried one of the newly submitted lens correction profiles for three of Nikon AF-P lenses, the AF-P 10-20mm wide lens, now found within lensfun-0.3.95 version.
I was saddened to see even with the lens correction profile applied to my photo taken with a Nikon AF-P 10-20mm lens within RawTherapee, there was still some remanent pin cushion lens distortion at the (1/16 or less) center of the image/photo.
I’m going to guess, this is likely due to the author only submitting the absolute minimal necessary lens test images. (I read into the process of creating a lens profile, and found it a very laborous process, unless one is already setup to profile lenses.)
Is this normal with other LensFun lens profiles as well?
Since correcting lens deformations is likely a redundant necessary task, what do most others do? Are they simply satisfied with the correction results of using a JPEG+RAW image comparison correction within RawTherapee? Or do dedicated users create their own lens profiles, time permitting I would assume.
The only other lens deformation I have noticed, is some barrel distortion when the Nikon AF-P 70-300mm lens is zoomed into 300m. Other than this, most other lens distortion seems not noticeable.