> 40x40 is much smaller then whats on the side of buildings > in the city... I love to know how they deal with such > huge file sizes...
Snuggle up to those images and you'll see that the image pixels are the size of your finger. The printed halftone dots are much smaller, of course, but the actual image size isn't all that large. Highway billboards, for example, might be 14x48 feet, but the actual image file is a mere 3.5x12 inches at 600 dpi. The scale is 1/4" per foot, so 600 dpi translates to a mere 150 dots per *foot*, call it 12 dpi on the billboard. More than you want to know: http://www.clearchanneloutdoor.com/assets/downloads/pdf_products/cco- prod-specs-bulletins14x48.pdf Those fancy LED billboards smeared all over the roads down toward the City have even lower resolution, on the order of two glowing pixels per inch: 400x1400 dots. More than you want to know about that: http://www.clearchanneloutdoor.com/assets/downloads/media_kits/2009_national_don.pdf Now, if you're printing a map that you expect to spread on a table and look at from a normal reading distance, then all the rules change... but you probably want a specialized tool for that job, not a general-purpose photo editor. -- Ed _______________________________________________ Mid-Hudson Valley Linux Users Group http://mhvlug.org http://mhvlug.org/cgi-bin/mailman/listinfo/mhvlug Upcoming Meetings (6pm - 8pm) MHVLS Auditorium Dec 2 - MythTV Jan 6 - Git
