Sigma EX wide-angle lens - 20 mm

• Manufacturer: SIGMA
• Part number: 411-306
• Description: This super-wide-angle lens is ensured minimal light-fall-off with superior peripheral brightness. The iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus images in the foreground and background. This is an ideal DG lens optimized Digital SLR camera. The minimum focusing distance of this lens is 20cm (7.9 inch) and it has maximum magnification of 1: 4 with fast F 1.8 maximum aperture. The minimum focusing distance of 20cm (7.9 inch) and 94.5¡ angle of view allow close up photography surrounding the photographic subject. The lens incorporates Dual-Focus (DF) mechanism. It is easy to hold the lens, since the focusing ring does not rotate during auto-focus, yet it provides adequate focusing torque of the focusing ring during manual focusing of the lens. The rear focus system eliminates the need for the front of the lens to rotate, thus allowing the use of a "Petal-type hood", which is superior light blocking effect. The use of aspherical lens elements in both of the front and rear lens groups effectively compensates for distortion, spherical aberration and astigmatism.

• General

• Packaged Quantity 1
• Length 4 in
• Diameter 3.5 in
• Weight 18.3 oz

• Lens System

• Lens System Wide-angle lens
• Special Functions Wide angle
• Focal Length 20 mm
• Lens Aperture F/1.8
• Magnification 1 / 4
• Min Focus Range 7.9 in
• Focus Adjustment Manual,
  Automatic
• Max View Angle 94.5 degrees
• Lens Construction 11 group(s) / 13 element(s)
• Filter Size 82 mm
• Diaphragm Blades 9
• Lens Coating Multicoated
• Mounting Type Nikon F
• Features Aspherical lens ,
  Rear focusing system

• Miscellaneous

• Included Accessories Lens cap,
  Lens case,
  Lens hood

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Manufacturer profile

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• Manufacturer:SIGMA
• Address:

  15 Fleetwood Court, Ronkonkoma, NY

• Phone: (631) 585-1144
• Fax: 631-585-1895

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