Not sure if this is what you mean, but in The Photo CS Book for Digital Photographers is an item headed THE COOL TRICK FOR TURNING SMALL PHOTOS INTO POSTER SIZED PRINTS
Open the digital-camera image you want to increase to poster size. Image menu – choose image size. When the image sise dialog appears, make sure Resample image is turned on, and change the Resample image interpolation method to Bicubic smoother. Switch the unit of measurement pop-up menus in the dialog from inches to percent and type 110 which increases your image by 10% Believe it ot not, when you increase in 10% increments, for some reasons it doesn’t seem to soften or blur the image. It’s freaky, I know, but to believe it, you just have to try it yourself. To get the image up to poster size, it’s going to take quite a few passes with this "increase-by-10% technique, so I recomment creating your own custom action to di ti for you at the press of a button. The final image, increased from 4.75" x 4.75" ti approx 20" x 20", and even on screen, the loss of quality is almost negligible, yet the image is the size if a standard, full sized poster.
Hope this helps
Moira
"David and Rachel Barkham" wrote in message
Would anyone out there know if it is posible to make one image print as 4 segmented prints of A4. I’m wanting to take some of the images i have and print them out LARGE for my living room wall but the maximum print size the printer will take is A4. Any help would be greatly appreaciated.