Hello everyone! This is my first post.
I went out and shot a roll with my newly acquired Mamiya DSX1000. And when I got the negs back and scanned them I noticed something on some of my shots. Only when I used either f11 or maybe f16 (as it was an extremely sunny day) I got something that looked like vignetting, except it is in the bottom middle of the frame. See below:
This only occured on the frames that were exposed at f11 or f16. If there was going to be vignetting, I would expect it to be at a wide open aperture, not at f11. It must be something else, but I don't know what!
I am using the Mamiya 55mm 1.4 lens that was available with these cameras originally. Is it something I can get fixed in the lens, or should I just go to ebay and find another lens?