Focus issues with Canon EF 70-200mm IS USM MkII using two different adapters R6 & R7
Hi I was wondering if anyone can help with this issue, it's really odd. I've had the EF 70-200mm IS USM MkII for a couple of years. I bought it from a friend, who had barely used it as he mostly uses large primes. The problem I have is the lens is pi...