Andy
On Wednesday, February 19, 2003 at 2:28 pm,
Andy Johnstone, andy.johnstone-at-free.fr, wrote:
> on 19/2/03 2:03 pm, william.curwen at william.curwen-at-virgin.net wrote:
>
> > Any scanner supported by VueScan is already calibrated by Ed Hamrick using a
> > standard Kodak Q60 slide.
> >
> > It's worth a lot more than $40 though <G>
>
> But will scanners not vary from machine to machine as printers do hence the
> need to profile/calibrate the machine individually?
you're right, scanners can vary a lot.
And I think it's a profile [or characterisation] we're talking about
here, built with a profiling target (the target being scanned on a
particuler device to measure the difference between original scanned
and reference data from a target measured with a transmissive
spectrophotometer)
- not a <calibration> [which is a resetting of hardware which I think
the scanner does itself in almost every case]
ps
Note that although some claim the trained operator can be sacked
- replaced by colourmanagement -
profiling a scanner does NOT make bad originals good, you still need
colour balancing skills to correct those, but a good profile certainly avoids
repetetive corrections necessitated by scanner idiosyncracies and
supeimposed upon every scan.
Just like a printer profile really.
Only works for trans though, but we're working on that.
Regards, NeilB
colourmanagement.net :: Consulting in Imaging & Colour Management
custom scanner and printer profiles, training on Trident & Imacon Scanning
supply Gretag and eyeOne, ICS basICColor series, XRite, OptiCal
http://www.colourmanagement.net/ ::: www.apple.com/uk/creative/neilbarstow/
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