User manual

25 • Focus adjustment and focus calibration
ColorQuartet 5.0 Pro
207
Focus calibration • Drum scanners
Separate focus calibrations must be made – and are stored – for transmission and reflection.
Together with your scanner, you received calibration targets for both scanning modes.
• The Transmission target is green. It is made from a normal film base and consists primarily of
green colors because ColorQuartet uses the green layer of the transparency when it looks for a
focus point in transmission scanning.
• The Reflection target is black and white. It is designed to be placed on top of a piece of clean
white paper about the same thickness as the originals you intend to scan.
Do the following:
1 • Mount the relevant focus adjustment target on the drum.
2 • If you are calibrating a drum that is not bar-coded, click on the Focus & Aperture button in
the Preview Setup window. When the Focus & Aperture window appears, choose the rele-
vant Drum Number and click on OK.
3 • Choose the relevant scanning mode (Transmission or Reflection) and make a preview scan
that includes the whole focus target.
4 • When the Preview window appears, draw a crop frame of about 2 x 2 cm (1" x 1") in the cen-
ter of the target.
5 • Choose Calibrate Focus from the Calibration menu.
6 • Click on OK to confirm..
• For reflection, remember to mount a piece of white paper under the target,
as described above. One good method is to turn over the original so the back
is facing up, and mount the target on that.
• Place the target in the same area of the drum where you will be making the
final scans.
• Mount the target the same way you expect to mount the originals for which
you are calibrating. For example, mount the target emulsion side down if the
originals will be emulsion side down. Mount the target in oil if you usually use
oil.
The calibration will automatically be carried out, and a message will
appear to tell you whether it was successfully completed.
If the calibration was successful, it will automatically be stored under
the chosen drum number or under the bar code number of the drum.