Hello all,
I recently picked up a Mamiya M645 with the 80mm f/2.8 lens for pretty cheap off of Craigslist but it appears that the aperture diaphragm isn't correctly closing. I've tried testing it at various apertures and firing the it with the back open as well as trying to fiddle with the A/M lever on the back of the lens but nothing seems to engage the blades. Is there anything else I could try myself or is it just better to take it in to have someone take a look at it?
I recently picked up a Mamiya M645 with the 80mm f/2.8 lens for pretty cheap off of Craigslist but it appears that the aperture diaphragm isn't correctly closing. I've tried testing it at various apertures and firing the it with the back open as well as trying to fiddle with the A/M lever on the back of the lens but nothing seems to engage the blades. Is there anything else I could try myself or is it just better to take it in to have someone take a look at it?