Sigma Corporation is pleased to announce the launch of the new 17-70mm F2.8-4.5 DC MACRO HSM for Nikon and 18-50mm F2.8 EX DC MACRO HSM for Nikon.  

17-70mm F2.8-4.5 DC MACRO HSM for Nikon

The HSM system has been incorporated into this large aperture standard zoom lens for digital SLR cameras. This lens is capable of autofocusing with all Nikon DSLR cameras (including the D40 and D40x) and has a minimum focusing distance of 20cm (7.9”) and maximum magnification of 1:2.3 enabling close-up photography. A Special Low Dispersion (SLD) lens and Aspherical lens allows a compact construction and high optical performance. 

SPECIFICATIONS

Lens Construction	15 Elements in 12 Groups
Angle of View	79.7 - 22.9 degrees (Sigma SD format)
Number of Diaphragm Blades	7 Blades
Minimum Aperture	F22
Minimum Focusing Distance	20cm/7.9 in.
Maximum Magnification	1:2.3
Filter Size	Diameter 72mm
Dimensions	Diameter 79mm X Length 82.5mm 3.1 in. X 3.2 in.
Weight	490g/17.3 oz
Corresponding AF Mounts	SIGMA

18-50mm F2.8 EX DC MACRO HSM for Nikon

The HSM system has been incorporated into this large aperture standard zoom 18-50mm F2.8 EX DC MACRO.  This lens is capable of autofocusing with all Nikon DSLR cameras ( inculding the D40 and D40x). Aspherical lens, SLD lens and ELD (Extraordinary Low Dispersion) provide high picture quality throughout the entire zoom range.  Super Multi Layer Coating reduces flare and ghosting.  High image quality is assured throughout the entire zoom range. Layer Coating and lens power layout provide high picture quality throughout the entire zoom range. 

SPECIFICATIONS

Lens Construction	15 Elements in 13 Groups
Angle of View	76.5 - 31.7 degrees (Sigma SD format)
Number of Diaphragm Blades	7 Blades
Minimum Aperture	F22
Minimum Focusing Distance	20cm/7.9 in.
Maximum Magnification	1:3
Filter Size	Diameter 72mm
Dimensions	Diameter 79mm X Length 85.3mm 3.1 in. X 3.4 in.
Weight	535g/18.9 oz
Corresponding AF Mounts	NIKON