Problems with scale and output format

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tim
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Posts: 3
Joined: Fri Apr 08, 2005 9:13 pm

Problems with scale and output format

Postby tim » Sat Apr 09, 2005 10:37 am

I have problems with the output formats, when I have for example an image with 20 cms heigh 25 cms original size, when I want to keep this size, I type in the scale section 100%, but suddenly I hear a 'bleep' and the scale has been changed.

So for now, I haven't got any problems to calibrate my scanner with the IT8 targets, but a simple thing won't do.

Is their someone who can help me on this saturday morning :D
don't blame the mac!

degrub
SilverFast Master
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Posts: 597
Joined: Fri Dec 21, 2001 1:00 am
Location: Texas

Postby degrub » Sun Apr 10, 2005 4:03 am

set the PPI manually and then down sample the image in Photoshop or the like. Otherwise, you have to know the output LPI/dpi required for the printer, display etc. to get the correct size. For example a CRT requires only 72 PPI sampling for a 1:1 image. An inkjet printer may require around 300 PPI to get the same 1:1. Otherwise the printer driver is resampling up/down.

And yes, this feature is a little weird until you read the manual and play with it.

Frank

Browkatowski
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Postby Browkatowski » Mon Apr 11, 2005 2:43 am

I have approximately 3,000 - 4,000 images per month to scan. I do not want to have to open each file in PhotoShop to do the downsampling - this adds additional steps and injects a slowdown in the the workflow. Is there a chart that I can acquire that will helpme calculate what my PPI needs to be to achieve the correct scale @ 300 dpi print resolution? Each frame can be set to a unique scale value, so I can just copy a frame if I'm batch scanning and want to apply it to all images on the bed.

Thanks.

Helpful Corn
SilverFast User
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Joined: Sat Jul 24, 2004 12:01 am

Postby Helpful Corn » Mon Apr 11, 2005 5:42 am

Hello all,

You might find the calculator at Wayne Fulton's "Scantips" website helpful:

http://www.scantips.com/calc.html

Also, Ian Lyons has written some excellent tutorials on Silverfast software at his "Computer-Darkroom" website. Take a look at the "Batch Scanninng" and "Job Manager" tutorials. I'll bet you'll enjoy them.

http://www.computer-darkroom.com/sf5_contents.htm

Best wishes,

H.C.


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