Using Epson 2880. Custon paper size is 15 X 15. Want to print a 11.25 x 11.25 photo. Specify this in Print settings but a print of a different size prints. Can not figure out what I am doing wrong. Using Lightroom 5 on a mac 10.9.5. Everything in right print panel is noted correctly as to cell size (11.25 x 11.25,, keep square checked, etc. What's my problem?
Make sure you do not use a borderless paper setup in the printer driver. This will enlarge the printed image slightly to create a small bleed, allowing for printing without borders on your paper so you do not want that if you want your image to come out close to what you set up in Lightroom.