Will is right, and that is the way things work.

You can up the resolution in Photoshop, but either you'll have to increase file size and get it all fuzzy (not because you're increasing the resolution, but because you're increasing the amount of pixels, and as such, blowing up the image) or decrease image size and get it at the right res. i.e. a 3000x1500 pixels image at 100dpi will print at 30"x15", if you just increase the resolution to 300dpi it will print at 10"x5", or you can increase both the res and the size to 9000x4500 to get it to print at 30"x15" at 300dpi, but then it will look fuzzy because of the interpolation necessary to increase the number of pixels.

If Photoshop is enlarging and blurring the image when you bring in a low res image, then you have a problem; what it normally does to me is just place the image at the size appropriate to its pixel size.

Keep in mind that no matter what anybody tells you, screens work in pixels: dpi and lpi are printing options, and as such, can be changed on the final image, one way or another. What you can't change is the actual pixel size, not without doing some sort of interpolation -or using a special filter, and that's a whole different kettle of fish- and that's when you start loosing image quality.

As for why Poser has the option, the reason is, to catter to people printing straight from Poser, who would then need the resolution setting. If you're going to do any postwork at all, no matter how minimal it is, on a graphics app, you can safely ignore the dpi settings and concentrate on just choosing the apropriate printing sizes.

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