DPI depends on whether the 20" x 30" wall prints are mechanically printed posters or real "photographic" prints. Photographers usually prefer that their big wall photographs are as sharp as possible. After all, they've spent all that money on pricey cameras and prime lenses. You know best.

Yes, more layers makes for bigger files. Cram as much memory into your machine as it takes. Time is money.

Rick S.

-----Original Message----- From: nateart
Sent: Tuesday, June 13, 2017 5:32 PM
To: gimp-user-list@gnome.org
Cc: notificati...@gimpusers.com
Subject: [Gimp-user] Move tool locks; what's triggering it?

Thanks - will take a look at the settings... I have started checking
that other apps are closed while I Gimp - that definitely helps

My work is mostly geared to print, commonly 300dpi. Greeting cards (normally
5"x7" or double) are one thing, but 20"x30" wall prints can get huge - I assume
that the number of layers in a file would be a factor?

--
nateart (via www.gimpusers.com/forums)
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