Poster printing query...

[amitava82]

I have made an A4 size poster using Photoshop. But I want to take a 2-3 feet size printout. So, do I need to scale the poster to appropriate size or the press can print any size of poster using same file without loosing the quality?

[valtea]

Am not expert and have no good experience in poster printing/designing but i'll write down what i think.
If your poster is in vector format then there wont be any quality loss even if stretched out.
If its in bitmap format then it will depend on the resolution. Typically i send my printing works at 300 dpi (small ones) so if your poster is to be enlarged then i think you will have to increase the dpi so that after resize the pic can still be at 300dpi.

[Garbage]

Bro, u have to crop the image to the size which u want to print. If u stretch that image, then forget about the quality !

[valtea]

then how is the 10feet by 15 feet hordings done in photoshop? or are they using different software. I can only image the RAM we will need and the size of the image if we define our picture as the real size in photoshop.

[Garbage]

U can make 10" x 15" picture. And then crop to 10ft x 15ft. (as I do)
The file will be much bigger (about 1 GB) ofcourse JPEG files can't such big. Thats why RAW format u have to use.

[valtea]

U mean we will crop it to bigger image??? i dont get it. Do u mean resize ?