Sigma Announce 28-70mm F2.8-4 DG

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

Sigma Announce 28-70mm F2.8-4 DG

August 30, 2005

Sigma Corporation is pleased to announce the launch of the new 28-70 F2.8-4 DG lens. This compact, large aperture zoom lens is ideal for digital and 35mm SLR cameras. The new multi layer lens coating and lens design reduce flare and ghost, and also creates an optimum color balance through the entire zoom range. An aspherical lens element is used for excellent correction of distortion throughout the entire zoom range. This lens’ excellent performance makes it an ideal lens for Digital SLR Cameras as well as film SLR cameras. This standard zoom lens has a large aperture of F2.8 at 28mm focal length and yet it is compact and lightweight, with an overall length of 62.5mm (2.5”) and weight of 255g. (9oz.). Ideally suited for traveling, landscape photography and general photography. The supplied zoom hood can be used to obtain a superior light-blocking effect.

Features

The new multi layer lens coating and lens design reduce flare and ghost
High image quality is obtained through the entire zoom range with the use of Aspherical Lens element.
It has a large aperture of F2.8 at 28mm focal length with an overall length of 62.5mm (2.5”) and weight of 255g. (9oz.).
Supplied lens hood blocks out extraneous light.

Sigma 28-70mm F2.8-4 DG
Focal Length	28-70mm
Minimum Aperture	F22
Lens Construction	11 Elements in 8 Groups
Angle of View	75.4 - 34.3degrees
Number of Diaphragm Blades	8
Minimum Focusing Distance	50cm (19.7”)
Maximum Magnification	1:6.5
Filter Size	58mm
Lens Hood	Bayonet Type Hood
Dimensions	Diameter 67.5mm (2.6”) Length 62.5mm (2.5”)
Weight	255g / 9oz