Quote Originally Posted by Keith Tapscott. View Post
Experience.
I have never quite got to grips with judging a negative just by looking at it, but I reckon that those who print professionally for other photographers can tell if it has been exposed and developed properly.
OK, I dont have experience, but I have a boat load of professionally run negatives. If I want "thicker" negatives, should I develop longer and if so how much longer? I have a test roll that I can use for experimenting.

Thanks!