Sigma 310306 50mm HSM AF Lens for Nikon AF Cameras GRAY
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Sigma 50mm f/1.4 EX DG HSM Auto Focus Lens for Nikon AF Cameras - U.S.A. Warranty

SKU: SG5014DNKAFG

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Review Summary

2011-01-18T19:00:00

Rated 3 out of 5

Must AF Fine tune by Focus Point

This lens is best for portrait use due to its great bokeh and peculiar focus quirks. On my Nikon D700 @ f/1.4, AF fine tuning differs by both distance and focus point used. At 6 feet, the center is nearly accurate with a +1 adjustment; however, the far left and right focus points require a -20 adjustment. At 2 feet, the center point requires a +7 adjustment while the left/right focus points are still around -16. When only 1.5 feet away, the center focus point is +13.When I called Sigma, they said that the focus will vary by distance; however, they were surprised by the difference with the outer focus points. They said do not expect a big difference by exchanging the lens for another sample. They could offer no guarantees on fixing the lens either. In other words, that's the way it is.[...] I can obtain consistent results by turning on and off Nikon's AF Fine Tune depending upon the focus point used. However, I am not sure I want to go through the continuous hassle.

Gman

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Sigma 310306 50mm HSM AF Lens for Nikon AF Cameras GRAY Specifications

  • Minimum Focusing Distance:

    45cm/17.7in

  • Focusing:


    HSM (Hyper Sonic Motor) quiet, high-speed AF
    Full-time manual focus override

  • Focal length:

    50mm

  • Maximum Aperture

    f/1.4

  • Minimum Aperture

    f/16

  • Angle of View

    46.8°

  • Lens Construction

    6 groups 8 elements

  • Maximum Magnification Ratio

    1:7.4

  • Filter Diameter

    77mm

  • Diaphragm Blades

    9 pcs

  • Standard Accessory

    Hood, Case

  • Weight:

    520g/18.3oz.

  • Dimensions:

    84.5mm x 68.2mm / 3.3in x 2.7in

3 Accessories for Sigma 50mm f/1.4 EX DG HSM Auto Focus Lens for Nikon AF Cameras - U.S.A. Warranty

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  • Filters (2)
  • Filter and Filter Kits (1)
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About Sigma 310306 50mm HSM AF Lens for Nikon AF Cameras GRAY

This is a large aperture prime lens with a standard focal length of 50mm, ideal for all digital SLR cameras. This lens has superior peripheral brightness even at the maximum aperture and corrects a possible sagittal coma flare.

This lens is perfectly suited for a wide range of subjects enabling outstanding, sharply defined images against a nicely blurred background. The fast, F1.4 aperture makes this lens desirable for use with Digital SLR cameras.

This lens effectively becomes an 80mm medium telephoto lens on digital cameras with APS-C size image sensors. The optimum optical design and molded glass aspherical lens element provide excellent correction for all types of aberrations.

The super multi-layer lens coating reduces fare and ghosting. Superior optical performance is also ensured throughout the focusing range. This lens has a minimum focusing distance of 45cm (17.7") and has maximum magnification of 1:7.4.

It creates a very attractive blur, even when a small aperture is used. This lens incorporates HSM (Hyper Sonic Motor), which ensures a quiet and high-speed AF as well as full-time manual focus override.

Sigma 310306 50mm HSM AF Lens for Nikon AF Cameras GRAY Features

  • Large Aperature, standard prime lens, has superior peripheral brightness and corrects the sagittal coma fare
  • Standard lens with large maximum aperture of F1.4.
  • Creates sharp images with high contrast and ensures superior peripheral brightness
  • Incorporates molded glass aspherical lens, perfectly correcting coma aberration and creating superior image quality.
  • Super multi-layer lens coating reduces fare and ghosting.
  • Hyper Sonic Motor (HSM) ensuring silent, high-speed AF.

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What's in the box:

  • Perfect Hood (Bayonet)
  • Front & Rear Lens Caps
  • Pouch Case
  • 1 Year Adorama Warranty