I'm scanning at 4000 dpi, the highest actual dpi of the LS5000. My scans
end up about 150MB. I reprocess them through Vuescan for the filtering,
especially Digital ICE or Vuescan's infrared cleaning, saved as DNG, and
the size is reduced to about 110MB. That is for RGB scans. The grayscale
ones would be 1/3 as large.
>From what I've read on the internet, your scanner does scan at 5400 dpi.
That should give you lots of information and I would not reduce it!
Get a couple of 4TB external disks and save everything at full resolution.
Tina
On Tue, Jan 14, 2014 at 5:16 PM, Jon Mitchell <olympus@xxxxxxxxxxxxxx>wrote:
> Hi Tina,
>
> Thanks for the quick reply. That was my initial thinking too, but over
> 200MB per scan seems high. Can I ask, what sort of file sizes you get for
> your scans ?
>
> I would welcome any else's comments on my scanner, but I believe it scans
> at
> 5400 dpi rather than interpolating. In VueScan I set the Scan Resolution
> (under the "Input" tab) to 5400 (the maximum shown). Under the "Output"
> tab
> I set raw size reduction to "1", which gives a 5400dpi output file.
> Similar
> process for the 48-bit RGB settings (set the scan "bits per pixel" in the
> "Input" section, and set the "Raw File Type" in the "Output" section).
>
> I understand the logic of greater resolution, and greater bits per pixel,
> meaning bigger file sizes. One bit that I can't fathom is how greater bits
> per pixel makes it considerably sharper. That one has me scratching my
> head.
>
> Now, finally, given a figure of about 220MB per scan, and maybe 250 of my
> films at 36 shots per film, that comes to 1,980,000MB (or, unless my maths
> has gone very wrong, about 2TB). I suppose that isn't so bad really. Add
> in maybe 2,000 to 3,000 family slides & negatives that I have inherited,
> and
> that is another half a TB or so. Perhaps I shouldn't be so scared of doing
> them all that way after all.
>
> I'm going off line in a while (it's getting late in the UK), so will check
> back in tomorrow for anyone else's thoughts. I apologise for only singling
> out 2 people previously - I know there are many of you with excellent
> knowledge on such matters, but Tina & Ken were the first 2 that sprang to
> mind. And now I think about it, Chris Crawford too (scanning B&W is
> another
> topic that may have me asking questions later ... at the moment I've only
> been looking at the colour slides & negs).
>
> Thanks again,
>
> Jon
>
>
> -----Original Message-----
> From: Tina Manley [mailto:images@xxxxxxxxxxxxx]
> Sent: 14 January 2014 21:50
> To: Olympus Camera Discussion
> Subject: Re: [OM] Scanning Question
>
> Storage is cheap. Scan them at the highest possible resolution and include
> multiple exposure scans, if possible. You don't want to have to rescan
> everything, believe me! Get every bit of information that is available in
> the slide or negative and save as DNG. Be sure your scanner is actually
> scanning at 5400 dpi and is not interpolating, though. You need to be
> scanning at the highest actual dpi that your scanner can do without
> interpolating.
>
> Hope this helps.
>
> Tina
>
>
> On Tue, Jan 14, 2014 at 4:41 PM, Jon Mitchell <olympus@xxxxxxxxxxxxxx
> >wrote:
>
> > Hello Everyone,
> >
> > One of the rare occasions when I come out of lurk mode, and it is to ask
> > for
> > the collective advice of the list ...
> >
> > For some time (OK, a few years !) I have been playing with a Minolta Scan
> > Elite 5400 and a bunch of slides - some shot with my old OMs (obligatory
> OM
> > content !). I am using VueScan to scan the files as DNG, and then
> > importing
> > them to Lightroom. Early tests had me weighing up file size vs image
> > quality. Scanning at full resolution and colour depth (5400dpi and
> 48-bit
> > RGB) produces file sizes of round 220 MB - so I settled on 2700dpi and
> > 24-bit RGB, as this produced file sizes of around 20MB (about the same as
> > the DNG files from my e330).
> >
> > My initial thoughts were that if I ever wanted to print something big, or
> > get a really good quality scan, I could always go back and scan that
> > particular slide or negative again at higher resolution. As time has
> > started to go on, however, I have worried more and more about this. I am
> > wondering if I should perhaps be getting every last drop of quality out
> of
> > the slides & negatives while I still can ? My concerns centre around:
> >
> > 1) The scanner won't last forever. Good scanners seem to be getting more
> > and more difficult to come by (I picked this one up 2nd hand, and that
> took
> > some searching).
> >
> > 2) I recently inherited a huge stash of slides from my Aunt and my Father
> > which I am going through and trying to scan and sort. Some of these are
> > invaluable family photos, and whilst some are in remarkably good
> condition
> > (some from the 60's look like they were taken yesterday !), some are
> > showing
> > signs of age.
> >
> > More recent tests (perhaps with a more critical eye, having gained more
> > experience) show that the 5400 dpi scans do hold a good amount more
> detail
> > (when zoomed in). More confusingly, the 48-bit RGB test scan has shown
> > considerably more sharpness than the 24-bit RGB scan. This last point
> > confuses me as I thought the bit depth was only concerning colour
> rendition
> > - not detail.
> >
> > So the question really is, what do you guys do when scanning your
> precious
> > slides & negatives ? I would particularly welcome the thoughts of those
> > here who seem to spend or have spent a lot of time scanning - I'm
> thinking
> > of Tina and Ken particularly (probably because they are prolific posters
> > !),
> > but I'm sure there are others.
> >
> > Thanks for any help and advice - not sure quite where to go with this at
> > the
> > moment.
> >
> > Thanks,
> >
> > Jon
> >
> >
> > --
> > _________________________________________________________________
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> > Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> > Themed Olympus Photo Exhibition: http://www.tope.nl/
> >
> >
> >
>
>
> --
> Tina Manley
> http:// <http://tina-manley.artistwebsites.com/>www.tinamanley.com
> --
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
>
> --
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
>
>
>
--
Tina Manley
http:// <http://tina-manley.artistwebsites.com/>www.tinamanley.com
--
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