Sigma APO 135-400mm F4.5-5.6 DG Lens - Press Release

[Photo-John]

Sigma APO 135-400mm F4.5-5.6 DG
Compact ultra-telephoto zoom lens, optimized for digital SLR cameras.

• The new multi layer lens coating and lens design reduce flare and ghosting.
  
• An aspherical lens and SLD glass elements provide correction for all types of aberration throughout the entire zoom range.
  
• The rear focus system ensures fast AF speed.

Sigma Corporation is pleased to announce the launch of the new APO 135-400mm F4.5-5.6 DG lens. This compact ultra-telephoto zoom lens is optimized for digital SLR cameras. The new multi layer lens coating and lens design reduce flare and ghost, and also creates an optimum color balance and better picture quality through the entire zoom range. This lens uses one aspherical lens and three SLD（Special Low Dispersion） glasses for excellent correction of various chromatic aberrations. It provides excellent image quality for digital and film SLR cameras. Rear focus system ensures high performance stability and ease of use. Since the front of the lens does not rotate during focusing, a circular polarizing filter can be easily attached and use. A removable tripod collar is included as a standard component.

Focal Length	135-400mm
Minimum Aperture	F32
Lens Construction	13 Elements in 11 Groups
Angle of View	18.2°- 6.2°
Number of Diaphragm Blades	9pcs
Minimum Focusing Distance	200-220cm (78.7-86.6")
Maximum Magnification	15.3
Filter Size	77mm
Lens Hood	Bayonet Type Hood
Dimensions	Diameter 83.5mm (3.3") x Length 183.6mm (7.2")
Weight	1245gr/43.9oz

Available for Canon, Nikon, Pentax, and Konica Minolta auto focus digital SLRs.

For more information, please visit http://www.sigma-photo.com/