On Wed, 2019-03-20 at 17:57 -0400, Rick Strong wrote: > Does anyone know of really good software for scaling up an 8x12 inch, > 300 pxi photo to, say, 16x20 or 20x24 inches or larger? Will GIMP do > that?
At 10 to 12 feet, 144dpi will be fine. Fine Art magazines and books rarely go over 150 lines per inch in a dot screen, so although 300dpi is recommended, 150 is fine, as long as you don't have text at small sizes. So, 8x12inch at 300dpi is 16x24inch at 150dpi. Now, newspapers use 75 or 72dpi screens generally. So try looking at a newspaper photograph from ten feet away and see if you're OK with the quality. If so, your image is good for 32x48inches unchanged (or just changing the image’s Print Size). If you're sending this out to a print shop, ask what resolution they need. If they insist on 300dpi, you can use gimp to scale it up; the results will not generally be as good with Fractal, though. You might also be able to use the liquid rescale / resynthesizr plugin to get better quality, because you're asking gimp to invent detail. Liam -- Liam Quin, https://www.delightfulcomputing.com/ Available for XML/Document/Information Architecture/XSLT/ XSL/XQuery/Web/Text Processing/A11Y training, work & consulting. Web slave for vintage clipart http://www.fromoldbooks.org/ _______________________________________________ gimp-user-list mailing list List address: gimp-user-list@gnome.org List membership: https://mail.gnome.org/mailman/listinfo/gimp-user-list List archives: https://mail.gnome.org/archives/gimp-user-list
