My first camera (60 years ago!) was a Yashica TLR. At that time and for the next 3 years, I had no issues composing through the WLF. Recently, I have returned to a TLR and have a hell of a time getting things square in the viewfinder. I found that by attaching a small spirit level to the hood helps, but It keeps getting knocked off so that is not a reasonable solution. Millions of photographers use WLF cameras, so it can't possibly be as difficult as it seems to me. What am I missing here? Just more time with the camera or is my brain so used to seeing things through a prism finder that I can't adapt to this new view?

— is to go back and forth between the actual scene and the ground glass much more often, something you don't need to do with a prism or rangefinder. Look up, look down, look up, look down, etc., in the case of the Bronica; in and out of the dark cloth a few times in the case of the 4x5. It's amazing how fast the brain adjusts from one view to the other, but the "real" scene is the one that dominates.
