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Sigma 28mm F1.8 EX DG Aspherical RF Macro Nikon Lens (Factory Refurbished)

Item # SG28F18NK (Part # 440306)
Sigma 28mm F1.8 EX DG Aspherical RF Macro Nikon Lens (Factory Refurbished)
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Discontinued. Factory Refurbished
Item Description:
Large aperture wide-angle lens, Macro focusing capability with fast F1.8 maximum aperture, Large front element and super wide-angle, Dual-Focus (DF) mechanism, Aspherical lens

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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") (reproduction ratio 1 : 2.9) and angle of view of 75.4. You can take pictures of 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.

Specifications:

  • 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 (3.3 in. X 3.2 in. )
  • Weight: 500g/17.6 oz.
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