Howtek 4500 and Ai

[photochrisis]

Am I blind? Or is there no place to manually set the aperture of the scanner? Also, I don't see a "calibrate" button....do I need a software upgrade?

Thanks,
Chris

[RAG]

Most scanners don't allow you to set the aperture.

If you want to use SilverFast's calibration feature you need an IT8 version. Another alternative is to purchase a third party calibration package like Spider or Monaco.