I used to help run a mini-lab in the back of a photo store and yes, we looked at all the photos we processed, for quality control if nothing else. But I also used to man the till at times and I recall one particularly attractive female teacher who used to come into the shop regularly. One summer, she went on holiday to somewhere hot and came back with a roll of film for us to process that included a photo of her topless on a beach. I never looked at her the same way again!