I don't have a cable release, and was thinking of shooting a long exposure tonight using the T on my lens. How do a release the shutter manually?
got it figured out
Care to share?
To close the shutter again after a long exposure you need to half (actually less than half, maybe 1/4) cock the mirror cocking lever, if you listen carefully you will hear it closing.
P.S. I've found the Canon dual cable shutter release works perfectly on my RB67 Pro SD...and I paid it about half price compared to the Mamiya one.