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Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Nikon Digital SLR Cameras

8 January 2010 24 views 5 Comments

  • Super wide-angle lens designed for Nikon digital SLR cameras
  • Hyper Sonic motor
  • 10 to 20 mm focal length
  • 14 elements in 10 groups
  • 3 special low dispersion and 3 aspherical lens elements

Product Description
Sigma provides the new ultra-wide angle zoom lens from 15mm and this lens is the first of its kind in the world. It can be useful for images of landscapes, large buildings, group photographs or even more. The perspective that changes with the angle-of-view gives picture an extraordinary feeling. Delicate compositions can be adjusted by lens zooming and this is helpful for close-up photography. Provides deep depth of field with its short focal length for amazing photographic expressions. This ultra-wide zoom lens covers a large wide-angle range from 15 mm to 30 mm. With a minimum focusing distance of 30 cm(11.8 inches) throughout the entire zoom range, it is an ideal lens for Digital SLR Cameras. It incorporates hybrid aspherical lens in the front lens group to minimize distortion and astigmatism, and molded glass aspherical lens in the rear lens group to minimize spherical aberration. Minimization of the distortion is a most important issue for zoom lens, but Sigma has succeeded, to provide image quality with minimal distortion by employing aspherical lenses. This lens in corporates an internal focusing system, which eliminates front lens rotation. Since focusing do not change its overall length, this lens is easy to hold and use. Also it is allowing the use of a Petal-type Hood. The lens also 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.Amazon.com Product Description
Designed exclusively for Nikon digital SLR cameras capable of wide-angle photography, the Sigma 10-20mm f/4-5.6 lens is a powerful tool for landscape photography and other wide-angle applications. The lens offers an ultra-wide angle of view of 94.5 to 56.8 degrees, with three special low dispersion (SLD) glass elements and three aspherical lenses providing optimum image quality throughout the entire zoom range. The lens also incorporates a Hyper Sonic Motor (HSM) to ensure quiet, high-speed autofocusing in addition to full-time manual focusing. Other features include a close focusing distance of 9.4 inches, a non-rotating lens barrel that perfectly suits the petal-shaped lens hood (included), and a one-year warranty.

Specifications

  • Focal length: 10-20mm
  • Maximum aperture: f/4-5.6
  • Lens construction: 14 elements in 10 groups
  • Angle of view: 94.5 to 56.8 degrees
  • Number of diaphragm blades: 6
  • Minimum aperture: f/22
  • Minimum focusing distance: 9.4 inches
  • Maximum magnification: 1:6.7
  • Mount: Nikon
  • Filter size: 77mm
  • Filter size: Petal-type hood
  • Dimensions: 3.3 inches in diameter and 3.4 inches long
  • Weight: 17.5 ounces
  • Warranty: 1 year

Sigma 10-20mm f/4-5.6 EX DC HSM Lens for Nikon Digital SLR Cameras

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5 Comments »

  • Kfh said:

    I used this lens for 1 week and took over a 200 photos in various shutter speed/aperture combinations; all of them turned out so-so to no good. The center sharpness is ok, but the sharpness and distortion of the image becomes unacceptable, starting about half-way to the image edge.

    I don’t believe I received a bad copy of this lens as a previous reviewer had as I didn’t find one side of the image to be better or worse than the other and the autofocus seemed to be on target.
    Rating: 1 / 5

    - 8 January 2010 at 9:25 am
  • J. Ford said:

    I have taken nearly one thousand pictures with this camera, anything from architecture to nature. While my initial assessment of the camera was good, after having it for some time, I feel that the fuzziness of the pictures is unacceptable. I guess I felt as though it was my initial settings, or maybe becuase of the wide angle of the lens this was something that was par for the course. I have since read about softness on right or left side with this leans, but my experience is clarity is no good accross the entire frame, in EVERY situation. I will either send back for repair or get rid of it for the cannon 10-22 lens.
    Rating: 2 / 5

    - 8 January 2010 at 10:34 am
  • Scott Mongrain said:

    I’ve had it a few months now and it’s great. Works great with my Canon 20D.
    Rating: 4 / 5

    - 8 January 2010 at 12:16 pm
  • Gym said:

    You get what you pay for. Got this as a Christmas gift for my wife who used it for the first time yesterday for our daughter’s 13th birthday. It was discovered that a shadow was present in all the pictures taken with this lens, starting from bottom center as if the hood cover was getting in the way, yet the shadow was there with or without the hood… then we noticed the dark picture when the lens was at full 10mm. I knew there was a hit and miss with this lens before I bought it, but now I wish I would of spent the extra $200.00 for a Canon.
    Rating: 1 / 5

    - 8 January 2010 at 1:18 pm
  • Paul M. said:

    This is a nice lens. It is well built, and has added some creativity to my shots. No complaints.
    Rating: 4 / 5

    - 8 January 2010 at 3:47 pm

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