Was the 50 shot wide open? This appears to be the case with the RD-1 having a .38 RF base. Odd thing I have seen reviews where the 12mm gets better reviews on the RD-1 than the 15mm and 21mm CV lenses. I would think the 12mm would have even more vignetting. Guess since it is basically a 18mm lens, the vignetting looks better?? I do like that the body is well built, compared to earlier CV bodies. Nice weight. Chris ----- Original Message ----- From: "Bill Lawlor" Subject: Re:RD1 > Chris, a friend of mine who own a pro camera shop got an RD1. He loved it > with the C/V 12mm but when he put a leica 50 on it he had to send it back > because of rangefinder problems. Bill Lawlor ========================================================= To Unsubscribe: Send email to leica-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field. The acknowledgment that you then receive MUST be replied to per instructions. You may also log in to the Web interface to unsubscribe.