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Sigma 17-50mm F/2.8 EX DC OS HSM Autofocus Lens For Nikon APS-C Sensor DSLRS {77}

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Sigma 17-50mm F/2.8 EX DC OS HSM Autofocus Lens For Nikon APS-C Sensor DSLRS {77} Description

Details

This series of zoom lenses was created to give a lightweight lens that could be wide angle or telephoto or in-between. The focal length rules still apply to zoom lenses. The focal length is for the format the lens was designed for.  This focal length is based on 35mm full-frame cameras or digital full-frame cameras. An SLR that uses a lens such as DX or APS-C most be multiplied by a factor to see the actual focal length that comes from using a sensor that is smaller than 24x36 size. If the lens is used with a full-frame SLR, the first number is the widest angle, the second the maximum focal length. If the second is less than 50mm, then it is a wide-angle zoom. If it goes higher than 50mm, it is a wide-angle to telephoto zoom. If the base maximum f/stop is a fixed number, the f/stop range will remain constant throughout the zoom range. If this number is two part, such as f/2.8-f/4, then the lens will only be an f/2.8 lens at the smallest millimeter. This will vary throughout the zoom range and will end at the maximum telephoto at the second f/stop. With a camera that meters through the lens, this change will be automatically adjusted. If you are using a flash that is not coupled to the meter, you must adjust the f/stop to compensate 

Sigma's new 17-50mm F2.8 EX DC OS HSM large-aperture standard zoom lens covers a focal length from 17mm wide angle and offers a large aperture of F2.8 throughout the entire zoom range, making it ideal for many types of photography especially portraiture and landscapes. The OS, Sigma's anti shake feature offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. The OS feature allows Sony and Pentax users the option of viewing a stabilized image in the viewfinder, a feature offered only by Sigma.

KEH Specifications

  • Focal Length: 17-50 mm
  • Aperture Maximum: f/2.8
  • Aperture Minimum: f/22
  • Camera Mount Type:  Nikon F
  • Format Compatibility: Nikon DX (FX in DX crop mode)
  • Angle of view: 72.4 - 27.9 degrees
  • Minimum Focus Distance: 11" / 27.94 cm
  • Elements/Groups: 17/13
  • Diaphragm Blades: 7
  • Image Stabilization: Yes
  • Autofocus: Yes
  • Tripod Collar: No
  • Filter Thread: 77 mm
  • Dimensions: 3.3" x 36" / 8.38 x 9.14 cm
  • Weight:  1.24 lb / 565 g
  • Manufacturers Part #:  583306

Specifications

Miscellaneous

Compatibility

Canon EOS Digital SLR Cameras

Application/Usage Camera

Physical Characteristics

Lens Mount Nikon G

General information

Product Model 583101
Manufacturer Part Number 583101
Manufacture GTIN 0085126583545
Brand Name Sigma

Technical Information

Minimum Focus Distance 11"
Lens Construction 17 Elements in 13 Groups
Zoom Min Focal Len 50 mm
Minimum Focal Length 17 mm
Maximum Aperture Wide 2.8
Optical Zoom 2.9x
Filter Attachment Diameter 77 mm
Zoom Min Focal Length 17.0000
Zoom Max focal length 50.0000

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