Mamiya 7II Viewfinder
Hi. I was wondering if anybody could help me. I recently bought a Mamiya 7II with an 80mm lens, both second hand, from an established seller. The viewfinder has been bothering me a lot as it's got one square inside another. Sometimes a few lines in the outer square fade away but not complexly. I'm attaching a picture. Hopefully it can show best what I mean. I was under the impression that the square suitable to the lens would remain and the other would fade but it doesn't happen. I bought a new battery today just in case but nothing has changed.
Can someone please suggest what might be the problem?
Thank you very much.