Re: Cameras

There were two versions of PhotoCD. Standard and PRO Photo CD.

Both are still available. Max OUTPUT "decompressed" resolution of
PhotoCD is 2k x 3k, with a file size of approximately 18 MB. These
files are not (far as I know) scanned IN at that resolution. I believe
they are scanned in at 1.3 megapixel and interpolated to the other
resolution values, both higher and lower. As you probably noticed, a
five-resolution scan is heavily compressed and takes up about 4.5 MB
on a CD.

PRO Photo CD is a mixed bag and a special case, in essence. Most PRO
Photo CD's are produced on an individual scan basis, much as you would
do with any large-format film scanner. 

Most photofinishers advertising scans on CD are not referring to PRO
photo CD. Obviously, you can get any custom scan put onto a CD
(assuming it will fit).

david


--- In BackpackingLight-F5Bj5G+ccuY@xxxxxxxxxxxxxxxx, Alex Tweedly <alex@xxxx> 
wrote:
> At 00:59 27/09/2002 +0000, dspellman2002 wrote:
> >35mm film has a data equivalent of about 22-24 megapixels (which would
> >produce a file of around 70 megabytes). NO CD-burning photofinisher
> >that I know of will scan at anything approaching that level. The old
> >(current?) Kodak PhotoCD scanned photos at a couple of megapixels and
> >then (in one version) interpolated four other versions, both larger
> >and smaller, from there.
> 
> I don't like to quibble - but are you sure that isn't old info ?
> 
> Kodak says (on
http://www.kodak.com/global/en/service/faqs/faq1001d.shtml ) 
> that
> >What is the scanner resolution on a PHOTO CD Disc?
> >For 16 Base scans on either the KODAK PCD Film Scanner 2000 or the
KODAK 
> >Professional PCD Film Scanner 4045, the scanner digitizes 2048 x 3072 
> >pixels over a 35 mm frame of film whose dimensions are 24 mm x 36
mm (0.94 
> >x 1.42 inches). This translates to a scanning resolution of 2200 
> >pixels/inch in both dimensions. For 64 Base scans, the Professional
PCD 
> >Film Scanner 4045 can scan varying film formats at 4096 x 6144
pixels or 
> >approximately 4400 pixels/inch.
> 
> so Professional Photo CD should be exactly what you want - and it
claims 
> they are scanned at this level, not interpolated. There appear to be
lots 
> of places that do the Professional  version, though I haven't
contacted any 
> of them to verify that, simply looked at the Kodak  site, 
> at 
>
http://www.kodak.com/global/en/professional/support/locators/piw/piwSites.jhtml

> )
> 
> -- Alex.
> 
> [Non-text portions of this message have been removed]