keystone, cropping, resolution in PS Elements

Hi,

I have taken photos of my mother's artwork and want to print it in a book for her grandchildren. The photos are not super high quality, are currently in JPG format, and I need to edit many of them to correct the keystone effect and crop them. As I understand it, the first step should be to convert them to TIF so that my edits won't further degrade the resolution.

It appears that Photoshop Elements can correct keystoning and crop. My question is, will it also preserve resolution (once I convert the files to TIF format) as well as Photoshop would, or should I go ahead and buy Photoshop? We just want the highest print quality we can get given the photos we currently have.

I should mention, in case it's relevant, that my niece is a graphic artist, has Photoshop, and will be enhancing the photos (contrast, coloring) after I'm done correcting any keystone effects and cropping them. So my output will be her input.

Thanks in advance,

Rosie

[Subject line edited by moderator to include "PS Elements" because the thread was incorrectly moved to Photoshop earlier.]

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