Re: scanner calibration help...
Re: scanner calibration help...
- Subject: Re: scanner calibration help...
- From: <email@hidden>
- Date: Fri, 13 Sep 2002 10:17:41 -0400
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From: "Kelly, Kristen E" <email@hidden>
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Date: 2002/09/13 Fri AM 08:50:13 EDT
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To: "'email@hidden'"
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<email@hidden>
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Subject: scanner calibration help...
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Hi All,
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I have been given the challenge of coming up with some sort of linerazation
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/ calibration for the Epson Expression 1640 XL scanner. The only catch...
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not using the Monaco EZ Color software that ships with the device but with
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Vividata's ScanShop on UNIX. To my knowledge this software has nothing in
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the way of calibration / characterization. I do have a Q-60 target that I
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could use per the included instructions for "visual reference" (compare the
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target to the digital proof made from the scan and adjust scan settings
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until a good match is achieved). Not sure if the final destination is
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monitor display or printed image so I don't want to involve the printer in
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the mix just yet. ICC profiling is not an option as the imaging applications
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are not ICC aware. Color Server not an option either. I don't have much to
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work with but would appreciate any input. Thank you.
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>
-Kris Kelly
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_______________________________________________
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colorsync-users mailing list | email@hidden
This is the old way to calibrate a scanner.
Since you have an IT8 consider this for reflection and transparency scans.
Use the steps 1-22.
For reflection use steps 1, 5, 11, 16, 22 to guide you.
In step 1 place rgb levels values 239
In step 5 place rgb levels values 192
In step 11 place rgb levels values 115
In step 16 place rgb levels values 40
In step 22 place rgb levels values 10
For transparencies use steps 1, 4, 10, 15, 22 to guide you.
In step 1 place rgb levels values 239
In step 4 place rgb levels values 192
In step 10 place rgb levels values 115
In step 15 place rgb levels values 40
In step 22 place rgb levels values
In the process of achieving these values you will use either the scanner to make the adjustments or scan the image at the scanners defaults and then use Photoshop to make the adjustments.
The values that I suggest are a starting point for a good scan. As you go through this process you will have to tweak them until you feel you have a good scan. Be sure that as you adjust the curves to obtain those values that you do not introduce unnatural breaks that will cause banding or contouring.
If you want a little more detail, I have this procedure for B&W scanner calibration as a pdf on my website. Reading it should give you a better frame work for a better understanding of the process.
http://www.photoshopfocus.com/tips.htm
Good luck.
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