>> Any suggestions as to the best way to interpolate up in these >> circumstances >> would be most appreciated. >> >> many thanks, >> David >>
Dear David, others have already suggested to try Photo Retouch Pro, and not only do I endorse this idea as well, but also suggest you to try other great tool PRP has, called JPEG Artifact Removal engine, quite a useful tool that really helps cleaning some files from artifacts. > One other thought; see if you can find out the exact line screen being > used to print the final piece, I have found that 300ppi is excessive in > most cases and that 1.5 times line screen (ie 225 ppi for a 150 line > screen) will do an excellent job (client may take some convincing). If > you uncheck resample and change the ppi to 225 (say) your file will > grow in output size to start with which will help. Interesting to mention here that a colleague in NY , just wondering why should Canon use 180ppi as the "reference" resolution of all the images coming out of their cameras, he decided to run a proof test at 180 ppi and results were astounding to him, leading to the apparent conclusion that it may be possible the the 300 dpi rule applied to files from scanners can be broken down t 180dpi on files from digital cameras, and 225 given absolutely comparable results than 300 dpi files. Should that be the case, then you won't have to upsize that much anyway. Adding grain ,noise ,etc in any of the offered methods will also help, but don't forget to try the jpeg artifact removal in PRP too. All the best. Jorge Parra APA/ASMP www.jorgeparra.com =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
