This is my black and white film of choice. I don’t know how I got into it, but it is definitely my favorite. It is ISO400, which is a very versatile speed. It responds very well to push processing, usually yielding better results than its close competitor, Kodak Tri-X 400. HP5+ tends to be a bit flatter than Tri-X, but that is actually a good thing, since you are getting a wider latitude and contrast can easily be added while in the darkroom. Of course there are many variables in this situation, due to the profuse amount of black and white developing chemicals there are (I always used Xtol). It comes in 35mm, 120 and sheets (4×5, 5×7, 8×10) and it even comes in disposable cameras.