1
vote
2answers
101 views

Avoiding resolution problems with collages

I am trying to create my first medium-sized poster in Photoshop, to print at 300ppi on A3. I need to bring together a collage of small files but I am worried that I will inadvertently expand one of ...
5
votes
1answer
2k views

Do I need full 300dpi resolution photos for designing a poster?

I'm working on a poster for a local event. It has a photograph in the background. The poster itself is designed to be 11x17, which at 300dpi is about 3300x5100. Now the photo in the background does ...