On Jul 16, 2007, at 5:46 PM, Matt Lampiasi wrote: > You made me realize an interesting thing and that is that I also > have no idea on the correlation between dpi and pixels. A dot (the "d" in dpi) is a pixel. Most cameras take pictures in 4x3 proportions. From this you can figure out what your requirements are. Suppose you want to print 8 x 10 prints at 150 dpi. This means you need 1200 x 1500 pixels -- 8 x 150 = 1200, 10 x 150 = 1500 -- 1.8 million. So a 1.8 megapixel camera would get you there, and you can probably get a camera with twice that resolution for around $100. Suppose you want to print 11 x 17 prints at 300 dpi. (11 x 300) x (17 x 300) = 16.8 million. So you'd need a 16.8 megapixel camera. That's going to cost you a pretty penny. (On the other hand, printing 11 x 17 prints at 150 dpi works out to 4.2 megapixels.) And the cameras take pictures in a 4x3 proportion - if you wanted a strip 30 inches wide and 2 inches tall, such as for a brochure, these calculations wouldn't work well. (You'd probably end up taking a collage of pictures and stitching them together in Photoshop.) Charlton -- Charlton Wilbur cwilbur at chromatico.net