Could anyone tell me the difference between monochome and black and white film? I've heard that monochrome film is like black and white but is developed in chemicals for color film: is this true? What other differences are there? Are there any upsides to using monochrome rather than black and white (better grain, contrast, whatever), and if so, what are the best brands? I've tried many a google search but there is very little information on the internet, so any insight is appreciated. Thanks!