Sigma 28mm F1.8 EX DG ASPHERICAL MACRO (FOR NIKON)

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Sigma 28mm f/1.8D EX DG ASPHERICAL Macro (NIKON)

Super Multi Coating reduces flare and ghosting that tends to occur when using digital SLR cameras. 
The large aperture wide-angle lens for digital and 35mm film SLR cameras.

This lens has a macro focusing capability with fast F1.8 maximum aperture, which is ideal for Digital SLR cameras.
Macro capability 

This lens is capable of Macro photography, with minimum shooting distance of 20cm (7.8 inch) (reproduction ratio 1 : 2.9) 
and angle of view is 75.4. You can take picture not only the subject but also the surrounding scenery.
Large front element and Super wide-angle 

The lens has an advanced optical construction, in order to obtain adequate peripheral brightness with open aperture. Also, the iris 
diaphragm has 9 diaphragm blades to obtain beautiful out of focus images in the foreground and background.
Handling 

The lens incorporates a 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. Also, this also allows 
the use of a Petal-type Hood and the easy use of a polarizing filter.

Aspherical lens 
It incorporates a floating focus system and uses two aspherical lens elements for minimizing distortion, aberration and astigmatism.

Lens Construction  10 Elements in 9 Groups
Angle of View  75.4 degrees
Number of Diaphragm Blades  9 Blades
Minimum Aperture F22
Minimum Focusing Distance  20cm/7.9 in.
Maximum Magnification  1:2.9
Filter Size  Diameter 77mm 
Dimensions  Diameter 83.6mm X Length 82.5mm
Weight  500g/17.6 oz.