Cover

Abstract

The photograph on the cover was taken with a low-cost digital camera using the method described by E. J. Milton in this issue (pages 1001–1007), which avoids many of the limitations of infrared sensitive Ž lm and produces excellent results rapidly and at low cost. The method is only suitable for static objects, as shown by the wind-induced colour fringes around the leaves on the tree in the foreground and the fact that the duck in the lower-right of the picture is not present in the nearinfrared image.