Sigma 28-300mm f/3.5-6.3 DG ASPHERICAL IF Macro

The 28-300mm F3.5-6.3 DG MACRO lens has a minimum focusing distance of 50cm at all focal lengths and is equipped with a macro mechanism for close-up photography at 300mm telephoto, allowing a reproduction ratio of 1:3.

28-300mm F3.5-6.3 MACRO lens is equipped with a zoom lock to prevent the lens from creeping due to its own weight, and to offer protection whilst the lens is being carried.

15 Elements in 13 Groups
Angle of View: 75.4 - 8.2 degrees
Number of Diaphragm Blades: 8 Blades
Minimum Aperture: F22
Minimum Focusing Distance: 50cm/19.7 in.
Maximum Magnification 1:3
Filter Diameter: 62mm
Diameter x Length: 74mm x 86mm (2.9 in. X 3.4 in.)
Weight: 490g/17.3 oz
Corresponding AF Mounts: CANON, NIKON (D), KONICA MINOLTA(D), PENTAX, SIGMA
* PENTAX SFX and SF7 cannot be used.

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.
IF	Inner Focus. This lens moves the inner lens group or groups without changing the lens' physical length.

Reviews

by Peter K. Burian, Shutterbug
http://shutterbug.com/equipmentreviews/lenses/0103sb_sigma/