I'm just curious if anyone has an opinion about this. In theory, given the same ISO, an 8x10 print from 4x5 film should show less grain than a 8x10 print from 35mm film.

But how much can I up the ISO of 4x5 film before it matches 35mm? I know it's not a perfect analogy, but would you reckon 3200 speed film on 4x5 would match 400 speed film or something even slower.