Hi, just sending this link again since I dont think my last post got to the m.l. It's the article Graeme refers to which covers all this rather well. http://www.worldserver.com/turk/computergraphics/ResamplingFilters.pdf /gg _______________________________________________ Gimp-developer mailing list Gimp-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer