Originally posted by pres589 iheiro, your shots with the M 40 are making me reconsider getting an M 35 f2.8. My only real concern is going to be trying to focus the M 40 with motorcycle gloves on. Using the "f8 and be there" concept, I probably shouldn't worry too much, and just use the thing like its focus ring is stuck most of the time.
I didn't have any trouble with small focusring, but I didn't try it with gloves on. I used small collapsible rubber hood with the lens, which prevented from sticking fingers into the lens, when you took the hold from the edge of the focusring. Aperturering was harder to reach and often required looking to change it.
I have only taken some test shots with my M35/2.8, so can't say much about it yet, but it seems like a decent lens and is probably sharper than M40. At least M35/2 is one of the best lenses in series and supersharp. But 35's are double the length of the M40, so when size matters, I'd go for 40. OOF rendering is also one of the lenses strong features where it's better than 35. If you want all sharp sharp 35/2 is the lens to go to.
Tougth call as they are all good lenses