I've downloaded the E-P1 manual and read if thoroughly, but the answer to this question is vague. I want to know that if I use my 40mm Summicron on the E-P1 with the M adapter, will I be able to activate the zoom-in feature to make it easier to focus? I am only interested in answers from someone who has actually used a manual lens on the E-P1, not inferred that it can be done from the manual or read on the web somewhere. And if it can't be done, then how difficult have you found it to focus a manual lens on the E-P1 in moderate sunlight conditions? Thanks in advance!