Try it out. It's got a bit of a reputation on the M8, but from what I understand, the film cameras have no problems.quote]
Not trying to take this over, but what problems with the M8. I haven't had any problems with it so far(3 weeks).
On my M3, and M4-P, it is my favorite lens. It is the focal length I like best, as I don't care for the 35mm or the 50mm. Very sharp even wide open, really great at f/2-5.6, but I didn't buy it for those, I got it to shoot wide open. If I want to shoot a 40mm stopped down, I use my Summicron-C 40mm.