Sigma 28-105mm F2.8-4 DG

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Sigma Announce 28-105mm F2.8-4 DG

August 30, 2005

Sigma Corporation is pleased to announce the launch of the new 28-105 F2.8-4 DG lens. This large aperture standard zoom lens provides superior performance both for Digital SLR Cameras and 35mm Film SLR Cameras. This standard zoom lens covers frequently used focal lengths from 28mm to 105mm and allows a large aperture of F2.8 at the 28mm focal length. It is very convenient for a wide range of applications including snap shots, indoor photography. The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras, and also creates an optimum color balance throughout the entire zoom range. The use of aspherical lens reduces various aberrations throughout the entire zoom range and improves optical performance. This lens has minimum focusing distance of 50cm (19.7 inches) throughout the entire zoom range and it has also maximum magnification of 1:5.5. Because the front of the lens does not rotate, circular polarizing filters and a petal-type hood can easily be used..

Features

  • New and most effective coating used for minimizing flare and ghost.
  • This standard zoom lens covers focal lengths from 28mm to 105mm and allows a large aperture of F2.8 at the 28mm focal length.
  • The use of aspherical lens reduces various aberrations and improves optical performance.



Sigma 28-105mm F2.8-4 DG
Focal Length 28-105mm
Minimum Aperture F22
Lens Construction 12 Elements in 11 Groups
Angle of View 75.4 - 23.3degrees
Number of Diaphragm Blades 8
Minimum Focusing Distance 50cm (19.7)
Maximum Magnification 1:5.5
Filter Size 72mm
Lens Hood Petal Hood
Dimensions Diameter 77mm (3)
Length 81mm (3.1)
Weight 405g / 14.3oz



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