Not sure if this is the right section to ask this but here is my sitution. I am turning some of my works in to posters 24in x 36 in posters. The issue I am seeing is some of my backgrounds I purchased here at the market place, and although they are large they are jpg formats, there for resizing them up I lose the sharpness.

I was under the assumbtion if I made it a smart object in photoshop you could resize with out loss of quility but that doesnt seem to be the case all though its not to bad you an still see some pixeliation.

So I am looking for some solution to be able to use these backgrounds, with out losing quility one other Idea I had is trying to use the jpg in Adobe Illustrator but thinking I iwll still hit the same wall.

Again any suggestions other then make my posters smaller would be greatful :)

Okay I think I figured it out and hopefully someone can exapnd on this or use it for their future projects.

you can open up AI and for me set up a document my size in this case was 24in x 36in and place(import) my jpg background into AI. This brings it in as a linked object and when I resize it in AI there seems to be no loss in quailty.

Then I just export it as a psd,png, or what ever I want and can then use that in Photoshop. Although it might just make sense to do my whole project in AI as linked files and hopefully a print shop cant print off a AI document.

Just thought I would share what I have learned

i've done the same thing. for some reason PS handle JPGs differently than Illus... not sure if it's the import engine in the different apps or what :(

you shouldn't have a problem with any print shop outputting your AI file (most handle tihs format out of necessity).

scott

Just now need to get the people that make they backgrounds in the market place to release them them in a png format so they can be upscaled and problem solved

 This is an issue with Photoshop, and has been for a number of years. My background with this was in making vehicle wraps for a company, for their fleet of trucks.. 12 to 20 feet in length and eight feet high.. the truck body.

  Universally, no matter what resample I used, if I had to resize an image for them, it would become "fuzzy" on the edges.. pixellation, really. My standard method of resizing was as you did.. to import into Illustrator and resize, then export. Simple explanation for this.. Photoshop and Illustrator do, indeed handle images differently Raster Vs Raytrace.