There is a danger that the inexperienced photographer looks through the viewfinder as if the camera were binoculars. Press the button to save the picture? No, No. Ten more seconds framing will make it a hundred times better. That and a year or two practicing the art of seeing.
156 pages, Hardcover. First published January 1, 1979. goodreads 
I can't remember exactly when I was touched by Freeman Patterson. I had photojournalistic skills but his small book opened up my relationship with my camera. He taught me to squint to see the bulk contrast in a scene. He asked me to stay put until I had seen every photographic opportunity. Where there is light there can be art.
I stopped carrying my camera on mountain hiking trips because I saw more than 35mm film could record. Better to see and remember, I thought. Mount Hood, Eden Park Meadow. The seen image is still clear in my memory.
My first digital camera was so weak that I had to take three or four images to capture what I saw. I took on the challenge. I wrote viewing software that understood what I was doing. This was later abandoned as digital improved.
The modern cellphone camera make mechanical skills of focus and exposure unnecessary. But "seeing" still makes the images one hundred times better.