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shushubag
07-26-2008, 12:29 AM
I have photoshop 7 and I need to resize files for a zuda submission. Can you change the dpi in photoshop? If so how?

I also have an A3 mustek 1200pro scanner, the resolution says normal, fine, and super fine. Is there any way to know how much dpi each one is?

I figure at some point I should learn how to perpare files and here is my chance.

L Jamal
07-26-2008, 09:53 AM
Lucky for you I know exactly where it is in PS 7 as that's what I use.
It's under IMAGE>IMAGE SIZE

When resizing he most important thing to remember is that you want the number of pixels to be EQUAL TO or LESS THAN what you began with.

Not familiar with a Mustek, but the best way to figure it out is to scan something small at each setting and open it in PS, to see the resulting DPI and/or pixel size.

GW.Fisher
07-26-2008, 10:16 AM
Using PS 7, go to file/import/scan express A3 USB. A scan window appears with the exact file type & dpi settings & can be adjusted as needed.

I scan originals in at 600 lineart & my colorist takes it down to 300 after the finished color.

Nick Pitarra
07-26-2008, 10:16 AM
What happens if I scan it in 300 dpi at 11 by 17. Change it to 500 dpi, save it, and then downsize to 10.5 by 7.That away the final is 10.5 by 7(or whatever size) at 500dpi. Will it come out messed up....if so I need to start rescanning alot of art work.

L Jamal
07-26-2008, 11:53 AM
What happens if I scan it in 300 dpi at 11 by 17. Change it to 500 dpi, save it, and then downsize to 10.5 by 7.That away the final is 10.5 by 7(or whatever size) at 500dpi. Will it come out messed up....if so I need to start rescanning alot of art work.

300 dpi at 11 x 17 produces a file that's 3300 pixels x 5100.
at 500 dpi that file should be no larger than 3300/500 x 5100/500 or 6.6 x 10.2.
7 x 10.5 is close enough that you will not see a huge difference in quality, but in an ideal world you'd start with a higher DPI scan.

I wouldn't go back and change anything, but going forward you need at least 3500 pixels x 5250, for a 7x10.5 file at 500DPI. So you're looking at scanning a little over 300 DPI (318DPI to be exact). I would suggest scanning even higher at 450 or 600 (if your scanner allows) because you never know when you need higher DPI images.

Nick Pitarra
07-26-2008, 12:07 PM
Thanks for the heads up man! I'll work on fixing it in future scans. I was freaking out for a second there.

GW.Fisher
07-27-2008, 09:53 AM
Good rule of thumb is to always scan at a higher resolution & reduce the file size after the fact. That way there's no loss of quality.