Sigma 28mm f/1.8 EX DG Aspherical Macro Large Aperture Wide Angle Lens for Nikon SLR Cameras |
 | Brand: Sigma
Category: Photography
Buy New: $449.00
as of 5/23/2012 03:17 EDT details
New (3) Used (1) from $419.99
Seller: Amazon.com
Media: Electronics
Shipping Weight (lbs): 1.7
Dimensions (in): 5.7 x 5.4 x 4.9
MPN: B00005RKST
Model: B00005RKST
UPC: 085126440442
EAN: 0085126440442
ASIN: B00005RKST
Shipping: Eligible for FREE Super Saver Shipping
Availability: Usually ships in 24 hours
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Features:
| • | 28mm f/1.8 | | • | Macro Large Aperture Wide Angle Lens |
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Product Description
Features minimum focusing, down to 20cm/7.9inches (reproduction ratio 1:2.9). The iris diaphragm has 9 diaphragm blades to obtain beautiful out of focus image. It incorporates the floating focus system and the use of two aspherical lens elements to minimize distortion, spherical aberration and astigmatism. The lens incorporates minimum vignetting optical construction in order to obtain adequate peripheral brightness with open aperture. Internal focus system of the lens eliminates front lens rotation, thus allowing the use of a Perfect Hood and easy use of polarizing filters. The lens also incorporates a dual-focus mechanism. It is easy to hold the lens, since focusing ring does not rotate during auto-focus, and yet provides adequate torque of the focusing ring during manual focusing of the lens. The lens materials used in this lens are lead and arsenic free ecological glass.
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