I'm a photographer, and I used to get annoyed that I'd have little distractions on the edges and corners of the frame, because I was focussed on the subject and

I'm a photographer, and I used to get annoyed that I'd have little distractions on the edges and corners of the frame, because I was focussed on the subject and overall composition. I trained myself to sort of bounce my eyes around the sides of the viewfinder when pressing the shutter (think like the DVD player menu). Now I almost never forget to check.