Hello, the only thing i know contact printing by is when you put all your 35 mm negatives flat on photo paper, put glass on it and then shine light thru them so that you can see all your pictures, on one piece of paper, and use that to base your exposure weel calculations on to get the proper exposure time the first time you make the print. I also make a contact print for my customers when they ask me to take a roll of film of subject x and then they want to pick the pictures they like. That way they can see a small version of each picture on one piece of paper wich saves money on paper and chemicals and most importantly, time. Other than what i described above, what is contact printing? So far i have made the educated guess that its what you do for large format (8x10 negatives), but i could be entirely wrong. So im embarrassed for asking this, but but there it is. If anyone could help me out thanks. Nick L.