The Sigma APO 120-400mm F4.5-5.6 DG Telephoto Lens manufactured by Sigma can be used for close-up photography. This lens allows you to use shutter speeds that are 4 stops slower than normal. 

• The minimum focus distance of the Sigma APO 120-400mm zoom lens is 59.1" 
• The rear focus system present in the lens reduces fluctuations and aberrations that could be caused during focusing
• Three SLD (Special Low Dispersion) glass elements present in the Sigma 120-400mm Optical Stabilized HSM Lens provide chromatic aberration correction
• The maximum magnification ratio of the zoom lens is 1:4.2
• The Sigma telephoto zoom lens has a super multi-layer coating that reduces flare and ghosting
• The lens features a two-touch zoom/focus control
• The angle of view of the Sigma APO 120-400mm F4.5-5.6 DG Telephoto Lens is 20.4 to 6.2 degrees
• The dimensions of the lens are 8" X 3.6" (length X diameter)
• The lens weighs 61.7 oz
  

Lens Construction : 21 Elements in 15 Groups

APO Tele Converter : 1.4X MF, 2X MF

Angle of View :20.4º - 6.2º

Number of Diaphragm Blades :9

Mininum Aperture : f22

Minimum Focusing Distance :150 cm / 59.1 in

Filter Size (mm) : 77

Maximum Magnifications :1:4.2

Dimensions (Diameter x Length) : 92.5 x 203.5 mm/3.6 x 8 in

Weight :1750g / 61.7oz.

Corresponding Mounts :Sigma OS HSM CONV DG, Nikon  OS HSM CONV DG D, Canon  OS HSM CONV DG, Sony/Minolta  OS HSM CONV DG, Pentax  OS HSM DG