I am planning a first time portrait sitting using a 330C and two standard mono flashes for lighting. My question concerns the camera's synch settings. Seems that an M setting is correct for "M" type tubes and an X setting is appropriate for "flash". This is according to the user manual. Could someone clarify what is a M type tube, and advise which setting is appropriate for the monos. Thanks in advance. Russ. ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.