The Sigma 18-50 F-2.8 Lens

The Sigma 18-50 F-2.8 Lens

The Sigma 18-50mm f/2.8 lens is an autofocus lens optimized for digital Cameras and provides an extremely useful range that is the 35mm equivalent of 28mm to 80mm. With a constant f2.8 maximum aperture, this lens is very useful and performs with the best of the best. While it is very comparable to some of the best lenses it is slightly edged by those that cost 5 to 6