steve_stoneblossom Loc: Rhode Island, USA

Thank you, all. I've submitted about 30 images to my printer; most will be 18x27 or thereabouts, but I wanted 6 larger, 24x36. They've expressed some concern about the larger size prints. The images vary greatly, shot with a variety of cameras (and phones), with a variety of sizes and PPIs. I knew going in that there might be problems with some of the images, but my employer would really like those particular images larger than the rest.

The printer said I could try to upscale them with Lightroom Enhance, and/or they could try to upscale them (they use Topaz).

If I do run them through Enhance, should I also resize them and sharpen for printing, or could those adversely affect the export?

CHG_CANON Loc: the Windy City

The sharpening for printing is an output process. You can always re-import the output files and use the LR compare window to look at the file against any other candidate version of the image that also exists in the LR catalog. Any pixel-up scale should be done on the edited original, not an output JPEG, so you're probably better positioned to create the best resulting print-file than the printer working on your exported file.

You can also assume the larger prints will be viewed from a further distance. Or, state your reservations in writing (email) before inferior results are presented for inspection.

steve_stoneblossom Loc: Rhode Island, USA

Thanks, Paul, you've been a great help.

SuperflyTNT Loc: Manassas VA

I’m pretty sure that’s what he just said.