The stock market section of the newspaper is printed in very small type and laid out in very straight lines. Two pages of that taped to the wall will give you a very good test pattern for resolution and distortion. r > > i wonder if anyone has ever designed a patern of > > stripes, colored squares > > and other shapes, that can be printed in a big piece > > of paper (couple of m2 > > large), or painted on a wall, to be used as a > > standard reference to be > > photographed, and comparisons of lenses or films be > > made > > > > would be great to use one, kostas
