Anyone know if there is a way to see the autofocus value in colorquartet? So if i use autofocus, i could then use this value to set the focus manually?
I know!
You can turn logging ON in CQScan, and after that, you get scan.log file in your ColorQuartet Pro 5.2\sys\cqscdrum directory.
Do a small autofocus scan. Check that the focus was correct, open the file and you can find data like this:
Standard values :
Focus Index, TransmissionValue ReflectionValue : 0 1744 1500
First is drum number, 0 is drum number 1. The second number is your drums focus value in steps (defined by focus calibration).
Then look for this line:
Focus value : 1844 (displacement : 0)
This gives you the autfocus point in steps.
Just deduct the base focus from the autofocus number, divide it by four and flip it. So that 10 is -10. And you can now use it in the "focus elevation".
One step in focus elevation is 4 steps on the motor. Apparently these are micrometers. So one way to do manual focus would be also simply to get a micrometer, and measure the thickness of the film if you would do a focus calibration on the surface of the drum.
This procedure is useful when you scan in parts, and want to retain the same focus on all parts. But still want to use the autofocus, so you dont have to find the focus manually.
I think i have also at some point used just done a focus calibration on the negative i'm scanning, this would basically accomplish the same thing. If it actually hits the focus correctly.
All this would be super cool, if the autofocus actually worked. Its literally impossible to hit sharp focus with it.
