2 Replies Latest reply: Oct 20, 2005 7:17 PM by DM
DM Level 1 Level 1 (45 points)
What size should a photo file be to print a 20x30 poster and maintain decent resolution? How about 16x20? I have a 1mb image 2592x1944. How big can I make it before it looks bad.

Thanks!
  • 1. RE: Image File Size for 20 x 30 poster
    lori_diloreto Level 6 Level 6 (16,995 points)
    Hi DM,
    different sites give different required resolutions.
    This is from Snapfish:
    Poster Size     Minimum Photo Resolution Required
    11" x 14"     800x630
    12" x 18"     900x600
    16" x 20"     1136x910
    20" x 30"     1278x852

    ClubPhoto:
    Posters: Custom Glossy Poster

    Custom Glossy Poster 16 x 20"
    Min. Resolution required : 1280 x 1024
    Product size : 17 x 25"
    Photo size : 16 x 20"

    Custom Glossy Poster 20 x 30"
    Min. Resolution required : 1536 x 1024
    Product size : 21 x 31"
    Photo size : 20 x 30"

    Custom Glossy Poster 24 x 36"
    Min. Resolution required : 1536 x 1024
    Product size : 25 x 37"
    Photo size : 24 x 36"

    You can always go to order a poster through iPhoto and when you get to the order page you will find out if the images resolution is good enough.
  • 2. RE: Image File Size for 20 x 30 poster
    DM Level 1 Level 1 (45 points)
    Thanks, that's very helpful.