<<offlist>>
G'day rob.
Being in your neck of the woods (well, at least the same hemisphere!), I
would be happy to share a slide or negative or two, and produce some raw
scans on my Acer 2720S. Let me know if you get any other responses, and
I'll give you a postal address.
I think it would be an interesting exercise - I'd also be happy to help dig
up a challenging image or two, although I reckon any of us could do that
pretty easily!.. I don't have many Velvias, but do have a fair bit of K25
and 64. (I also don't do all that much portraiture, so my collection
wouldn't be a great choice if you want to compare other stuff, eg fleshtones.)
Regards, Mark T.
At 03:30 PM 28/08/01 +1000, you wrote:
>Just a thought - I don't know the guts of how Photoshop produces histograms,
>so this may not work as well as I think it could... Would it be a useful
>comparison of scanners to scan the same slide with Vuescan to raw files
>and compare the histograms? It seemed to me that this might give some sort
>of a meaningful comparison of where the data might be getting clipped.
>I'm not sure how it could work with negs, but a comparison of slides would
>make more sense anyway with the greater range of
>density. Comments? Obviously
>this is only good for scanners supported by Vuescan and not very scientific.
>
>I've scanned a few slides on the SS4000 and I'll take them home to try some
>comparisons with the output from the LS30. One thing is already clear -
>the brightness settings in Vuescan aren't consistent across all scanners.
> Where a brightness of 1.5 is too bright on the LS30, the data from the
>Polaroid seemed to need pushing to a brightness setting of 2.0 or even more.
> This was not something I expected.
>
>Rob
>
>
>Rob Geraghty harper@wordweb.com
>
