Hi, i'm an happy user of the GFX 50s.
But yesterday, after 2 year of portrait/fashion work, an issue pop up: an overexposed band in every bottom of the shot, like the shutter won't close properly (with elect.shutter there's no issue). Looking at the shutter shuttin' without the lens, i can see that don't close completely, leaving a 2-3mm space, giving the light leak. Shutter count seems 4500, i'm not a compulsive shooter and i've use it only for high-profile works... So the fuji is pretty mint, but i have that issue at the bottom of the frame: