I just got out of my history of photography class and we're studying Calotypes right now. I got this idea, that if i got normal B&W printing paper, and cut the sizes down to 4x5, I could slide those into film holders and run them through one of my schools 4x5 cameras and have a negative print. could be interesting! problem is, what would a paper like the Ilford RC deluxe pearl have an ISO of? I would imagine paper and film are totally different, but on the ilford site they say a few times that it's ISO 130 or 160. I don't know how accurate that is though, and i'd have a hard time thinking that the paper is about the same speed as ISO100 film. Thanks for anyone who MIGHT have an idea of what it could be!