Scanning at 4000 dpi for a 35mm neg takes about 10 - 15 min using the settings I like. Not practical for a 36 exp roll when a single shoot may involve upwards of 4 rolls, so what I do is to proof everything at a very low res into jpgs ... easy to store, share, etc... but not great for serious prints. On Sun, Aug 7, 2011 at 2:57 PM, Eric Neilsen <e.neilsen2@...> wrote: > ** > > > Lew, Why scan to JPEG? That was the biggest question of your posting to me. > > > _____ > > From: DigitalBlackandWhiteThePrint@yahoogroups.com > [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Lew > Schwartz > Sent: Sunday, August 07, 2011 8:11 AM > To: DigitalBlackandWhiteThePrint@yahoogroups.com > > Subject: [Digital BW] Grain/aliasing, CoolScan 5000 and VueScan > > I have an increasingly annoying problem in that what appears to be grain in > my scans is worse at higher dpi's than it is in the quicky 500 dpi 8 bit > scans I do as proofs. This is for traditional, 35mm, bw film coming out of > my darkroom. > > From what I've been able to read on the net, this may be due to aliasing & > not the actual grain in the film (It's much worse than I'd see in a > traditional, gs print.). Contrary to what I've read, however, it is not a > matter of threshold iso/grain size issues, rather it's a continuum, getting > progressively worse as iso/grain increases. It may not be readily > noticeable > at lower iso's, but close inspection reveals it to be there. > > Here are what I believe to be the pertinent the settings I use in Vuescan > for my, hopefully, best scans: > > Media: B/W negative > Bits/pixel 16 bit gray > Resolution: 4000 dpi > Number of samples: 8 > Fine mode: Yes (checked) > Multi Exposure: Yes (checked) > > I've been playing, unsuccessfully, with checking/unchecking, no of samples > etc... Medium size jpg's seem to produce better scans than the maxed out > settings above, but of course, they won't work for larger prints going > forward. > > [Non-text portions of this message have been removed] > > [Non-text portions of this message have been removed] > > > [Non-text portions of this message have been removed]
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Re: [Digital BW] Grain/aliasing, CoolScan 5000 and VueScan
2011-08-07 by Lew Schwartz
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