I have a Mamiya Super 23 with 100mm f3.5 lens. It is fully working, however, the frame lines are not accurate. The actual photo actually captured is offset to the right of the frame lines. The frame lines does move with focus distance, not accurately reflect the frame lines. Are the frame lines adjustable? I would like to adjust the frame lines a little to the right. Apart from that, the camera is very nice and very useable.