a friend of mine and i are laying out the test methodology we will employ in a study whereby we compare several scanners to determine which will hold up to enlargment better - smaller formats on dedicated film scanners or larger formats on flat beds. we are currently disscussing film choice and hoped to solicit some opinions from our friends on the forum.
to make color comparison back to the original easier, we want to use positive film. ideally, we'd like to use the sharpest film possible, so thought initially velvia. however, we're also going to be assessing each scanners range, so wanted a film with a little more latitude, which pointed us to Astia. however, i've read that Astia isn't as sharp as Velvia, so that made Provia seem like a good choice, as it's something of a comprimise on both ends... sharper than Astia, but wider that Velvia.
do you guys have any suggestions for film choice? is our reasoning thus far off-base?
any inputs would be greatly appreciated.