Sriram R , Jul 05, 2000; 05:12 a.m.
Probably not (2), since the lens wouldn't cover an 8x10" negative - it would only cause severe vignetting. I've seen some (unnamed) filters which may be able to do what you described. These are clear in the centre and get progressively diffused as you go towards the edges of the filter. I'm just guessing here.