
Sigma announced a new 17-50mm f/2.8 EX DC HSM lens for Sony and Pentax DSLR cameras. The old 17-50mm f/2.8 EX DC OS HSM lens ($669) will be discontinued. Specification (for Sony mount): Lens Construction:17 Elements in 13 Groups Angle of View:79.7-31.7 degrees *Number of blades: 7 pcs (Rounded diaphragm) Minimum Aperture: f/22 Minimum Focusing Distance: […]