Hello everyone. I just purchased an '30s kodak brownie No.2 (the Beau Brownie with the Art Deco design on it) with the intent of taking pictures with it. I have the manual for it and it tells me the exposures I should use for old kodak film that as far as I can tell had no ISO number so I wouldnt know what film to use with those exposures. What I wanted to know is, what are the f-stop equivalents on the camera? Is the largest opening an f/5.6, 4, 2.8? I figure just by looking at the 3 different sizes the next 2 are on f-stop from the last. Hopefully someone that has experience shooting with one of these cameras can shed some light on this. Thanks alot in advance for any responses.