Orthochromatic, if you take photos with a red filter you won't get any image! You can even have it exposed to red safe lights (how long is safe I don't know). Kind of exciting because you don't need to use a red filter with it to increase contrast; it already has contrast. You can save 1.5 to 2 stops with same effect! Develops in black and white chemicals. 300ft roll is equal to around 60 regular 35mm rolls. I'd like to sell around around 20 rolls (300ft a piece). They are slightly too big to fit some bulk loaders, I just roll half of one onto another center piece of a roll, and load 150ft at a time. You can actually do this under red light (not sure for how long, but people use to use 4x5 orthochromatic negatives to make positive transparencies under red light) It expired in 2004, but has been stored well, and doesn't appear to show any signs of age. It appears to be 50asa (maybe even a bit lower), or at least if you shot at 100 it would need a lot more development. I did 8 minutes of Tmax 1:4, at about 68-70 degrees for the samples. Could benefit from yellow filter for sky just like regular black and white film. Shipping is free to lower 48. (padded envelope unless you order a lot, then box) Otherwise I have to tack on extra. $60 [Mod. note: Price updated as per poster's request.] per 300ft. (price brake for saving on shipping happens at 5 or more rolls). Here are some sample pictures with zero post-process, scanned at 150dpi on v700. I consider it to be pretty awesome. So awesome I'm saving a lot for myself, but I have more than enough to go around for awhile.