To clear some doubtness about the Kodak-PCD-format (PhotoCD) here is a
short information:

Introduced in the beginning of the 90's it is a multisession WORM-disc
(write once, read many) and can hold about 100 images in 5 different
resolutions in a compressed format.

•  height  width               2nd         size     looks
     in pixel     name        name        in MB    like
   ------------   -------     --------    -----    ----------
     128 x  192   base/16     Wallet       0.1
     256 x  384   base/4      Snapshot     0.5     thumbnail
     512 x  768   base        Standard     1.5     TV
    1024 x 1536   base*4      Large         5      HDTV (high definition TV)
    2048 x 3072   base*16     Poster        20     photo quality
•
 [ Editor's Note:
 [
 [ Claus,
 [    Thanks very much for providing this invormation.  I use a
 [ "Large" image I downloaded from Kodak's Web site as my
 [ background when running Windows.  It was about 5 meg before
 [ I converted it to a .BMP (Windows isn't very smart).  Its
 [ a scene from Yosemite.  For those of you with Web Browsers:
 [
 [    http://www.kodak.com/digitalImaging/samples/samples.shtml
 [
 [ Enjoy,
 [ Jody