So I work at The Camera Store, for the past few months at least, and I've gotten to know some pretty neat people.
Anyways, there's a particular custom who comes in very frequently, at least once a week with a few rolls of film to have developed.
Normally he has color 35mm film, I forget the camera he was using, but he was always very happy with his photos.
He brings his DSLR and uses the dslr to get appropriate settings (he shoots a ton of sunsets etc.)
He then sets the same identical settings on the film camera and begins shooting.
Today he brought in 35mm lomography black and white film.
I haven't even seen this film before, but was obviously going to have it processed for him.
Anyways, when I got into processing, went through everything, his roll was BLANK except for small, exposure squares chronologically and evenly spaced out on the negative...
I had no idea what, how, or any thought other than his shutter wasn't opening, or he was shooting way too fast, had the wrong iso, or had his iso on say 1600 on the dslr and the film was 100is?
I don't know the iso of the film he was using or anything, I'm not super knowledgeable on film other than how to process it.
So question being:
What would cause an empty roll of film with what appeared to be way under-exposed brackets on the film negative evenly spaced out????