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Sigma 24-70 F2.8 EX DG lens
September 10, 2004
Sigma Corporation is pleased to announce the 24-70 F2.8 EX DG lens.

From 24mm super wide angle to 70mm medium telephoto, this lens provides a large F2.8 aperture at all focal lengths. It incorporates "Super Multi Layer Coating" to reduce the influence of harmful light caused by reflections from the digital image sensor.

Two SLD elements, one Glass Mold Aspherical plus two Hybrid Aspherical aspherical lenses provide excellent correction of various aberrations and a high level of optical performance. The lens has a minimum focusing distance of 40cm (15.7 inches) at all focal lengths and is capable of macro photography with a maximum magnification ratio of 1:3.8. It also incorporates a Dual Focus (DF) system that is designed to make the lens easy to hold during autofocusing, and yet provides a large focus ring for easy manual focusing. Since the front of the lens does not rotate, a Petal-type hood and circular polarizing filters can be easily used.

Major Features

  • EX DG Lens Series; Designed to give a superior performance with Digital SLR Cameras as well as 35mm Film Cameras.
  • Excellent image quality is provided by two Special Low Dispersion (SLD) glasses, plus one Glass Mold Aspherical and two Hybrid Aspherical lenses.
  • Minimum focusing distance of 40cm (15.7 inches) and a maximum magnification ratio of 1:3.8.
  • The Dual Focus (DF) system ensures ease of operation.
Specifications

  • Focal length: 24-70mm
  • Maximum aperture: f/2.8
  • Minimum aperture: f/32
  • Lens construction: 14 Elements in 13 Groups
  • Number Of Diaphram Blades: 9
  • Picture angle (AOV): 84.1-34.3
  • Minimum focus range: 40cm (15.7in.)
  • Max. reproduction ratio: 1:3.8
  • Attachment size: 82mm
  • Dimensions: approx. 88.7mm x 115.5mm (3.5in. x 4.5in.)
  • Mounts: Sigma, Canon, Nikon D, Pentax and Minolta D
  • Weight: approx. 715g (25.2oz)


Home Reviews Forums News 2015 2013 2012 2009 2008 2007 2006 2005 2004
RSS Feeds FOV Factor Table Sensor Sizes | Definitions: A-D E-H I-L M-P Q-U V-Z | Sitemap
Articles Archived Websites (Pre-DigitalDingus): D100 Lounge E-10 Club | Contact