I recently purchased a Hexanon 90mm for my M240 and I really am quite pleased with the lens in general, however I've noticed that it tends to focus behind what I'm intending which delivers a slightly soft image overall. When I use live view or the EVF on my M240 I can nail the focus and it is an impressively sharp image. I suppose with practice I can learn where this point is and just adjust for it, but I wondered if it is possible to adjust the point of focus on the lens so that I don't always have to rely on the EVF for a sharp image.
I've read that the thickness of the KM lenses are just ever so slightly different than M mount lenses and as such they can result in slight backfocus (as I'm experiencing).
Any tips?