Originally Posted by
Jerry van Dijk
Thanks Diane and Don.
I'm not able to print at this size myself, nor am I able to print on other materials, so I use a semi-pro lab. The print on Forex foam plate has a matte finish. The method of printing is not comparable to inkjet printing. In the words of the printer they use a '1200 dpi piezo-electrical printing process'. Although they are a pro lab, they don't do any up res or additional sharpening on the master file I supply, so they advised me to upsize the photo myself to the correct size. Apparently they expect me to be a pro too! The only requirement they state for an optimal result is that the file needs to be 300dpi, and they supply an ICC profile for each specific printing process.
Don, in your sharpening routine after upsizing, do you indeed oversharpen a little for prints as I read in some books and internet resources?