recently picked up a canon ltm 50/1,2 with the intention of shooting it on my bessa. little did i know, there’s a huge focus shift on it when shooting wide open. this is something i found out after getting my first roll developed; then realizing all my shots were out of focus. decided to do some research and found that this is a common problem with ltm lenses with super shallow dof mounted using adapters on rf. pretty much makes this lens obsolete for the bessa. hm.. maybe i’ll just keep it for my sony then.