Lenses Great New Optics For Digital And 35mm SLRs
(Read the full article...)Already available in more typical mounts, five Sigma lenses will now be made in FT mount as well. These include the digital-only 30mm f/1.4 EX DC HSM and 18-50mm f/2.8 EX DC, but also the multi-platform Macro 105mm f/2.8 EX DG, APO Macro 150mm f/2.8 EX DG HSM, and APO 50-500mm f/4-6.3 EX DG HSM. Because the focal length magnification factor (actually field of view crop) is 2x with Four Thirds cameras, the 50-500mm zoom is particularly impressive, providing 100-1000mm effective focal lengths. A large, sturdy tripod or very fast shutter speeds will be required for sharp photos without blur from camera movement.