The effect of megapixel counts and print sizes, this article demonstrates that 5Meg (or more) can produce apparantly identical results at a 16x20 print size. In my experience with printing 8MP images (all shot in JPEG) from my Minolta A2 at 13x19" size (on a Canon i9900 printer), its pretty much impossible to see any evidence of their digital origins - about the only chance is if you can pick out a sharp edge between a light and a dark object, then you might be able to make out a narrow band of lighter area intruding onto the dark region (which is probably a JPEG artifact). I have done a 13x19 print from the Minolta A2 of trees in autumn standing in a field of long dry grass, and even on the grass I cannot make out stair casing. I did some test prints once from my 3MP Canon G1 and printed a 16x20 as a tiled 8x10 set (which means that the printed pixels were about 100 pixels per inch) and in those you could see pixelization on the edges of things, but if you viewed from a reasonable distance you could not see them. My conclusion is that 5MP should be good enough for most people, especially if you get a camera with a larger sensor to reduce the sensor noise. Of course if one is purchasing a camera with less than about a 5x optical zoom then more pixels might well be useful to allow for additional cropping before printing. [1]