The 10 to 20 millimeters f4 to 5.6 EX DC HSM lens allows enjoyment of super wide-angle photography and it is a very powerful tool for indoor shooting and landscape photography with APS-C size image sensors of digital SLR cameras.Wide angle of view 102.4 degrees at 10 millimeters and 63.8 degrees at 20 millimeters offers the photographer greater freedom of expression.Three SLD glass elements are...