I think I mentioned it was the R5 and that at one point canon Virginia wanted the R5 to “fine tune” it with the lens. However, I sent them more raw images as requested, using a link they sent. For some reason they decided to send the lens back to me before reviewing them. I am still to receive my lens! I have been without it for 4 weeks now and still no closer to a resolution (pardon the pun). After shipping my lens they finally reviewed the raw files and agreed that there is an issue. Who knows where my lens actually was? Canon service is shocking and as far as the R system goes, I don’t think they know what they are doing. I hate to do it but I will be selling the lens to KEH and buying a new copy.