The Sigma 28mm F1.8 EX DG ASP Macro Lens is designed to be used with full-frame digital SLR cameras and smaller APS-c size sensors. This Sigma 28mm ASP macro lens comes with two Aspherical glass elements, which enables correction for distortions. With a minimum shooting distance of 7.9 inches, these wide angle prime lenses prove to be useful for macro photography.

• The macro lens provides a reproduction ratio of 1:2.7
• This Sigma 28mm ASP Macro Lens is optimized with a floating optic focusing system, which enables you to shoot at various distances
• You can use a petal-type hood and polarizing filters as the lens features a non-rotating front lens
• The wide angle Sigma 28mm F1.8 EX DG ASP Macro Lens is just perfect for most scenic and landscape assignments as well as indoor photography
• These wide angle prime lenses are ideal for both novice and professional photographers
• The dimensions of this Sigma 28mm ASP macro lens are 3.3 x 3.1 in and it weighs 16.9oz
  
  

Lens Construction: 10 Elements in 9 Groups
Angle of View: 75.4º
Number of Diaphragm Blades: 9
Mininum Aperture: f22
Minimum Focusing Distance: 20 cm / 7.9 in
Filter Size (mm): 77
Maximum Magnifications: 1:2.9
Dimensions (Diameter x Length): 83.5 x 80 mm/3.3 x 3.1 in
Extended Dimensions: 88.9 mm / 3.5 in
Weight: 480g / 16.9oz.
Corresponding Mounts: Sigma ASP EX DG, Nikon ASP EX DG D, Canon ASP EX DG, Sony/Minolta ASP EX DG D, Pentax (3)ASP EX DG