I am thinking about making an 11x14 pinhole camera. I have a 4x5 pinhole that I use, but I use sheet film with that so I can use my regular black and white filters. But with the 11x14 i will be using paper negs and contact printing back to positive. The only question I have is what color filter should I use. I am wanting to try and get the paper neg to print like how a regular black and white photo would print when using a yellow or red filter during the time of exposure. Any help would be great.