Quote Originally Posted by gma
I think it would be very difficult to tell the difference between 80 and 90 lines per mm.in the negative. Paper can resolve only 30 or so lines per mm and unless you are examining your enlargements with a loupe I do not understand your concern.

So, if a paper can only resolve 30 lp/mm paper, and your film can only do 90 lp/mm you can only enlarge your negative three times before the image becomes blurred. For a 35 mm negative that would mean a 7,5 x 10,5 cm (3x4 inch) print. Don't you think that's a little bit small? ;-)