(Note: I in error posted this thread to the wrong forum and it was suggested that I post my concern here in this Olympus Cameras forum. What I wrote follows and I thank you in advance for your patience): "I need help. I bought a E-P2 (used), and the salesperson set up the exposure button (to the right of the shutter button, in case I am not calling this button by the correct name) to serve as a toggle between auto focus and manual focus. I am a newbie to this particular model camera! I have searched the manual and on the Internet as to how to simply do this toggle. Can someone please advise? I unwittingly did something to lose the setting. I have used this camera for about 2 weeks now, without any mishap - but tonight, I upset the apple cart. Thank you very much in advance for any help you can give to me." Of course, I can always go back to the store for help, but when I could not find a solution that works on the Internet, I thought of researching a forum such as this one. I know I am missing something, and am not afraid to admit this - and I figure the only dumb question, is the unasked one! Thank you!! And if I am not clear on my question, I will gladly give more information!