I found an extensive discussion about this topic on the Adobe Community. It is, in fact, a problem in moving from V2 to V3 of the Adobe lens profile for the Canon RF 24-240mm. See: https://community.adobe.com/t5/camera-raw-bugs/p-canon-24-240-lens-p...
This is apparently a Lightroom issue. I changed the LR lens profile from the most recent V3 back to V2, and the problem went away. I see that I am out of date on the firmware for my camera. I will update that and see if the lens profile V3 works pro...
I recently began having the same problem with blurred borders to my photos using the RF 24-240mm F-4-6.3 IS USM. I don't notice this at the shortest focal lengths, but anything over about 40mm has this problem. My camera is an R6 MII. I purchased the...
