How can i get a 'hazy' or diffused effect on photos?

i have a canon FTb QL, in case it matters. I also don't want any photoshop tricks...i already know how to use that. I wan to get that hazy soft glow purely out of film. Either black and white or color, both would be phenomenal. i have a 35mm a 50mm and i believe a 100 or 120 mm. I think a lot of it, besides lighting of course, is depth of field, but getting it explained would help a lot. Thanks in advance to everyone who answers =]