Julian Robinson wrote: > If you want to check your scanner, I describe an easy way on > > http://members.austarmetro.com.au/~julian/photography/ls2000-focus.htm
What a very useful page. Have you had any feedback from LS-40, LS-4000 or LS-8000 users on the effective DOF on these scanners? Are these different from your measurement on the LS-2000 of 24 Nikon focus units for general use and 12 focus units for the grain critical sharpness? (I know this assumes, quite possibly wrongly, that the focus units in Nikonscan are constant between the scanners.) >From recent posts, it's certainly clear that some LS4000 owners take a similar >approach to you to find the optimum focus point and still cannot always get the entire film plane within the effective DOF. I'm curious whether the design changes needed to achieve 4000dpi have made the DOF better or worse. From the number of posts about DOF problems, it sounds like it has got worse but only this sort of test separates the facts from hearsay. Ironically, the (mould damaged) films I have that would benefit from ICE are also quite bowed so solving one problem could easily introduce another :-) Al Bond ---------------------------------------------------------------------------------------- Unsubscribe by mail to [EMAIL PROTECTED], with 'unsubscribe filmscanners' or 'unsubscribe filmscanners_digest' (as appropriate) in the message title or body
