[campbell]

If I am printing something that is... say 12x18. I would put 10x18 inches in photoshop, right?

But how many pixels do I put per square inch?

[seb.design]

Originally Posted by campbell

If I am printing something that is... say 12x18. I would put 10x18 inches in photoshop, right?

But how many pixels do I put per square inch?

300dpi for print. Not really sure why you would make your file 10x18 though. If your original is 12x18. As long as you have 1/8in to 1/4in bleeds (depending on where you are printing) you should be ok.

At the print shop I work, our press workers only need 1/8 inch bleeds. So that would mean (if you don't want to stretch your image) that your file will be 12.25 x 18.25 inch at 300dpi

[Do Gooder]

all the inches lose me (i'm decimal)

Photoshop is for editing images - if you artwork is just an image.. 300dpi is fine for it too appear at it's best in print

but keep in mind that lineart (text and graphics) are printed at around 1100dpi on a litho press.

illustrator/freehand or quark/indesign are the programs to use for page layout and printwork involving lineart.

photoshop is an unrivalled image editing program but it's a case of horses for courses when it comes to print.