I am doing 35mm B&W photography, and I am using Ilford HP5 Plus 400 ISO B&W film. I live in Tucson, where its very bright during the day (Its bright enough to get 1/250, and sometimes 1/500 @F11). I don't currently have any 50 ISO b&w film, so I was wondering: Can you pull the 400 ISO Ilford HP5 Plus film to 50, or will I just end up throwing out a roll of film, because it cant be pulled down to 50 ISO?
If nobody knows, I'll just test that later.
I havent checked google yet, because I am currently on my cellphone, so I apologize, if the answer is on google.