Jason Schneider published 12 short and simple rules for making photos at popphoto.com.

Rule 6 could come in particularly handy for designers.

6. Largest Digital Print Rule

To calculate in inches the largest photo-quality print you can
make with a digital camera, divide the vertical and horizontal pixel
counts (see your manual) by 200. For critical applications, or if you
want exhibition-quality prints, divide the pixel counts by 250.

Which rule will make your images better?

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