In the past, when there’s been no curator to sequence, size, and position the images for an exhibition, I’ve done it using Visio. I’ve got an exhibition coming up, and there’s no curator, so I need to do the lay0ut myself. This time, I decided to see if I could use InDesign. Turns out it works great. You can set up pages in InDesign that are the actual size of the walls — at least I had no problem with 48 inch high by 240 inch long pages. Then you export the images from your DAM (I use Lr) at actual size in TIFF format (I’m using a printer with native resolution of 300 ppi, so that’s what I’m using).
Place those images into InDesign, and they’ll automatically be the right size. There’s no image scaling or messing around with thumbnails, which are sources of human error.
InDesign will export the images as JPEGs or PDFs for the people hanging the exhibition to use.