What should the "render options" resolutions be in order to receive a jpg file with the same resolution as a 35mm camera? Should it be pixels/inch or pixesl/cm. Does it need to be 72 dpi or 720 dpi or 3500dpi or does it even make a difference? What's the formula - I'd also like to know the dpi in order to emulate a 64mm film camera. Thanks everyone for the help on the other questions.