Automatic Calibration without IT8 Target?

All the problems with Plustek film scanners

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Automatic Calibration without IT8 Target?

Postby CVG » Mon May 22, 2006 5:27 pm

I have a OpticFilm 7200 35mm slide scanner. Is there any calibration medium for this scanner?

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Postby LSI_Noack » Wed May 24, 2006 1:44 pm

Dear CVG

no target, no IT8 calibration (<a href="">here</a>'s why and <a href="">how</a>). With a Plustek 7200 you usually get bundle <a href="">SilverFast SE</a>, but the IT8 calibration feature is only available with SilverFast Ai, so you'll need to upgrade your version.

Best regards
Sonny Noack
- Manager Technical Support, LaserSoft Imaging AG -

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Postby EMaerkel » Thu Jun 01, 2006 10:09 pm

LSI_Noack wrote:no target, no IT8 calibration

No IT8 target - no IT8 calibration - that is true, but that does not mean no calibration at all. Most slide scanners do so automatically by scanning a blank area (removing the target from the light path) prior the scanning.
Such two-point calibration does not provide the capabilities of a calibration like IT8, which does also cover non-linearities an other effects.

For unknown reason, I have found the IT8 calibration not leading to neutral colors, so I used the IT8 calibration as a basic calibration and had to readjust the settings afterwards.

Eckart M?rkel

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