Same as Pre-burned screen services..
The size of your art file should be the exact desired size of your film.
Art files should have only the colors black and white.
The black area in your art file is what will be printed in your print.
In vector files, fonts should be converted to outlines or rasterized.
Formats for optimized, high quality prints: .AI, .PSD, .PDF, .BMP
Formats that might work, buy may not produce the highest quality prints: .JPG, .PNG
Film output is a "print only" service. If you need color separations, we do offer them HERE