| Sigma 20mm f/1.8 EX DG RF Aspherical Wide Angle Lens for Pentax and Samsung SLR Cameras |  | Brand: Sigma
Category: Photography
Buy New: $629.00
as of 5/23/2012 03:17 EDT details
New (3) Used (1) from $525.00
Seller: Amazon.com
Media: Electronics
Shipping Weight (lbs): 1.8
Dimensions (in): 5.7 x 5.4 x 5.1
MPN: B00005RKSN
Model: B00005RKSN
UPC: 085126411459
EAN: 0085126411459
ASIN: B00005RKSN
Shipping: Eligible for FREE Super Saver Shipping
Availability: Usually ships in 24 hours
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Product 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. Minimum focus distance 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. Handling 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. Incorporated aspherical lenses The use of aspherical lens elements in both of the front and rear lens groups effectively compensates for distortion, spherical aberration and astigmatism.
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