Scanner Calibration for artwork scanning

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huygens
Posts: 90
Joined: Mon Jun 08, 2026 1:26 am

Scanner Calibration for artwork scanning

Post by huygens »

Updated: I got access to a second scanner to compare the calibration to ensure consistancy accross scanners:

Raw Canon scanner output:
Image

Raw Epson scanner output:
Image

Corrected canon Image:
Image

Corrected Epson Image:
Image


So other than the Epson being a much better scanner, calibration does ensure consistancy :-)

Still working on it but heres a cover using my current scan settings:
http://www.flickr.com/photos/29612438@N … 9/sizes/l/
check out the grass!
Last edited by huygens on Wed Jul 01, 2009 7:21 pm, edited 1 time in total.
pepsidrinker
Posts: 414
Joined: Mon Jun 08, 2026 1:26 am

Re: Scanner Calibration for artwork scanning

Post by pepsidrinker »

That should definitely be added to the guide with the corrected you can tell it's sky blue in the background and not that purplish blue. But how much did that cost you looking at the prices I've seen between $40 to $100 for it. Though I went through the first 10 pages only.
huygens
Posts: 90
Joined: Mon Jun 08, 2026 1:26 am

Re: Scanner Calibration for artwork scanning

Post by huygens »

I got mine off ebay for $15 I'd look there first. I don't know about shipping but there's a German company that sells them for $10.00. http://www.targets.coloraid.de/ Any IT8.7 reflective target will work. The Q-60 is the kodak number for their IT8.7 targets.

IT8.7 Wikipedia page

The corrected image looks much more like the original. It is indeed a blue sky not a purplish one.
pepsidrinker
Posts: 414
Joined: Mon Jun 08, 2026 1:26 am

Re: Scanner Calibration for artwork scanning

Post by pepsidrinker »

Ok, I will...I'll also ask my photographer friends if they have something like that. Image

Hopefully that program works with my old Compaq S200 lol.
Last edited by pepsidrinker on Tue Jun 23, 2009 1:46 am, edited 1 time in total.
huygens
Posts: 90
Joined: Mon Jun 08, 2026 1:26 am

Re: Scanner Calibration for artwork scanning

Post by huygens »

Images updated.

Method:
Scan at 600 dpi (no color correction)
Appy color profile
Apply Descreen 4.0 filter ($20 for the home version)
resize to 300 dpi using "bicubic sharper"
Fix damage with rubber stamp tool
save as png (large but better than tiff while still being lossless).

Note for archival purposes 300 dpi makes sense as the halftone screen frequency is 145lpi therefore 300dpi is just over twice the screen resolution. The res nees to be more that the halftone resolution because of the non-halftone parts of the image (playstation logos/ text).
Last edited by huygens on Wed Jul 01, 2009 8:22 pm, edited 1 time in total.
pepsidrinker
Posts: 414
Joined: Mon Jun 08, 2026 1:26 am

Re: Scanner Calibration for artwork scanning

Post by pepsidrinker »

This looks great... consistency is good. Thanks again. I will be on the look out for IT8.7 reflective target after the move.
Last edited by pepsidrinker on Wed Jul 01, 2009 8:57 pm, edited 1 time in total.
DJoneK
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Re: Scanner Calibration for artwork scanning

Post by DJoneK »

That looks really really good.  I can't wait to collect your scans. Image
ssjkakaroto
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Re: Scanner Calibration for artwork scanning

Post by ssjkakaroto »

Amazing stuff huygens Image
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ghost
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Re: Scanner Calibration for artwork scanning

Post by ghost »

huygens what software is the one in the first post? and can you post a more detailed guide?
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