30X 40Previous Back to: Questions & Answers1 Replies Home / Forums / Questions & Answers / 30X 40 This topic has 1 reply, 2 voices, and was last updated 12 years, 11 months ago by Ribbet. Author Posts hallie wasserman February 23, 2013 at 9:09 am #1014 I want to create a 30X40 poster of my collage. What dimensions do I need to use? Settings Reply Ribbet February 23, 2013 at 9:12 am #1020 Hi Hallie, If you start with a collage layout which is square in shape, you can use the proportions slider at 43:57 or 57:43. This will give you an optimally sized collage that will have very little cropping on a 30×40″ poster. Settings Reply Author Posts Reply To:30X 40 Your information: Name (required): Mail (will not be published) (required): Website: Cancel Submit