As part of a college project (no I'm not asking you to do my homework!) I need to emulate some shots taken on a 10x8" camera. The shots in question were taken "wide open". It has occurred to me that lens tend to get a little slower as the format increases, e.g. my Bronica lenses are a stop or two slower that the equivalents from my Pentax 35mm kit.
So the question is this, what is the typical widest aperture on a LF lens? Something of equivalent FOV to a 50mm and/or 28mm on a 35mm SLR.