Also is their a shop/chain that could do this without costing me big $$'s?
Ack! I should have specified decent and technically competent to the shop/chain description!Walmart![]()
you divide the DPI by of the resolution of the photo.
take the highest resolution of the 20d is 3504 x 2332 and divide that by 300 DPI that would be 11.68 x 7.73, Now you can lower the DPI and get bigger prints but the qaulity/sharpness of the print won't be as high.
hope that helps...
If it supports RAW images then you could theoreticaly go much bigger.
With RAW proccessing you could scale the image up a Huge amount in Photoshop and go larger than 24 x 30 if you wanted.