I've designed some popup banners (output dimensions 840mm x 2000mm @ 300dpi) and used vectors throughout with the exception of some stock photography for their backgrounds. I've been Linking all rasters as usual, and only when I reviewed my first export at 100% in Acrobat did I notice that Illy doesn't antialias the raster graphics.
Even at the largest resolution available - £70 worth of stock photography per time - the images still required some upscaling to be incorporated into the banner artwork, so regrettably this was unavoidable.
Annoyingly Illustrator doesn't seem to either want to / be able to antialias these raster graphics on PDF, EPS or raster export, with upscaled raster graphics simply having their PPI reduced (not 'upscaled' in the manner Photoshop would resample) - am I missing some buried config option? The images are so large attempting to use the Rasterization feature that Illy complains about being out of memory (on a fairly meaty 4GB quad core box) and in Acrobat Pro when reviewing the exported PDF, the pixelisation is clearly viewable.
I'm hoping that if I design at quarter resolution the printer will be able to uprez the raster graphic using whatever RIP software they're using, but I have very little experience in this area; previously all my graphics have been 100% vector in Illy or it's been practical to use rasters at 100% resolution because I've been designing 1:1 with smaller output dimensions. I've tried all the workarounds I can think - uprezzing to PSD then linking - failed, 600MB PSD wasn't liked by Illustrator! - and saving out a 30,000 pixel wide JPEG and trying to Link in Illy - again, import engine failed with memory error. I've tried embedding the image, which worked when I disabled the pixel preview, but Illustrator still wouldn't antialiase the raster graphic.
I have the space of this evening to either figure out how to get round this problem before I have to submit artwork for tomorrow AM, or failing that just bite the bullet and hope the pixelisation isn't too bad when printed. Am I missing anything blindingly obvious in Illustrator that might be preventing the desired antialiasing on export?
Cheers in advance...