3. MAKE THEM SINGLE NEGATIVES This means no manipulation of any kind, no double exposures or overlapping negatives. Fortunately I began decades before Photoshop was invented. What you see happening in the frame of my image happened inside the viewfinder of my camera. It’s a line I wrote as a copywriter in an advertising agency in New York working on a camera account: What Happens Inside Your Mind, Can Happen Inside A Camera. I believed in the concept strongly enough that I wanted ..." (website)