Sigma 28-105mm f/2.8-4 DG

12 Elements in 11 Groups
Angle of View: 75.4 - 23.3 degrees
Number of Diaphragm Blades: 8 Blades
Minimum Aperture: f/22
Minimum Focusing Distance: 50cm / 19.7 in.
Maximum Magnification 1:5.5
Filter Diameter: 72mm
Diameter x Length: 77mm x 79.5mm (3.0 in. x 3.1 in.)
Weight: 405g / 14.3 oz.
Corresponding AF Mounts: SIGMA, CANON, NIKON (D), MINOLTA, PENTAX

LEGEND

AF	Auto Focus
ASP	Aspherical lenses. Provides distortion-free images with image reproduction performance equivalent to that of a single focal length lens. Aspherical lenses allow the production of high-quality images from compact, lightweight telephoto zoom lenses.
DG	These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs.
IF	Inner Focus. This lens moves the inner lens group or groups without changing the lens' physical length.