Swapping Leica M for Mamiya 7 ??
Sadly I've never owned a Leica, but I love my Mamiya 7 II, the viewfinder is so bright!
I was able to focus at night on something that I properly exposed at 30 seconds! (400TX) Even at that dark I could still see the parallax image, I was shocked! It wasn't BRIGHT or anything at that dark, but it was enough to see and use it, I was blown away (I was also on a tripod).
Borrow one and give it a try.
ALSO mamiya 7 can shoot 35mm 24mm X 64mm panorama images, so, think of the versatility!
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