Sigma 50-150mm f2.8 II EX DC

Overview

Large aperture telephoto zoom lens designed exclusively for digital SLR cameras and reveals its strength in close-up photography.

The Sigma Corporation is pleased to announce the launch of the new APO 50-150mm F2.8 II EX DC HSM lens.

This large aperture telephoto zoom lens is designed exclusively for digital SLR cameras with APS-C size sensors and its compact, lightweight body provides freedom of movement and versatility. The minimum focusing distance of 100cm/39.4in. and the high-Resolution power layout have improved the strength of the lens in close-up photography. This lens offers a large aperture of F2.8 and its large Depth of field offers greater freedom of creative expression. It has a maximum aperture of F2.8. Four SLD glass elements are used for maximum correction of chromatic aberrations. The super multi-layer lens Coating reduce flare and ghosting and ensure sharp images throughout the entire zoom range. The lens design incorporates an Inner focusing and inner zooming system. As the overall length of the lens does not change during focusing and zooming, convenient handling is ensured. The HSM (Hyper Sonic Motor) system allows quiet and high-speed auto focusing with full time manual focus override by just rotating the focusing ring. The addition of the optional 1.4x EX DG APO or 2x EX DG APO Tele Converters produce a 70-210mm F4 AF tele-zoom lens and a 100-300mm F5.6 AF ultra-telephoto zoom lens respectively.

Compact, lightweight, large aperture telephoto zoom lens
SLD (Special Low Dispersion) glass elements and the super multi layer lens coating assured high image throughout the entire zoom range
The new lens design ensures high image quality at the minimum focusing distance of 100cm/39.4 in.
Equipped with HSM (Hyper Sonic Motor) with full-time manual focus override
Compatible with Sigma 1.4x EX DG and 2x EX DG APO Tele-Converters

Lens Specifications

Generic Lens Specifications

Lens Type: Zoom
IS / VR / OS: None
Min Focal length (mm): 50
Max Focal Length (mm): 150
Number of Elements: 18
Element Groups: 14
Max Aperture: 2.8
Minimum Aperture: 22
Diaphragm Blades: 9
Closest Focus Distance (m): 0.1
Maximum Magnification: 1.5
Filter Type: Screw In
Filter Diameter (mm): 67
Diameter at widest (mm): 76
Lens Length (mm): 140
Weight (g): 780
Release Date: Jan 2008

Details

Lens Construction	18 Elements in 14 Groups
Angle of view	27.9 - 9.5 degrees
Number of Diaphragm Blades	9 Blades
Minimum Aperture	F22
Minimum Focusing Distance	100cm/39.4 in.
Maximum Magnification	1:5.3
Filter Size	Diameter 67mm
Dimensions	Diameter 76.5mm X Length 140.2mm 3 in. X 5.2 in.
Weight	780g/27.5 oz
Corresponding AF Mounts	SIGMA, CANON, NIKON

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Editor review : Sigma 50-150mm f2.8 II EX DC


Overall rating (weighted)		4.0
Sharpness		4.0
Build Quality		4.0
AF Speed		3.0
Value for Money		5.0

The lens feels tight and well engineered; no sags or rattles here. Both the zoom and focus rings are satisfyingly wide and the overall feel oozes quality, which carries through to the attractive finish. The results are extremely sharp throughout the aperture settings...' 'The reasons to invest in this lens are considerable given that there are very few f/2.8 telephotos on the market under �800, let alone �515. The new Sigma 50-150mm lens is specifically designed for DSLRs with APS-C size sensors. And there is no denying that this is a quality product.' 'Autofocus is swift and quiet enough as the lens has a Hyper Sonic Motor system. Optical performance revealed a crisp sharp lens with little Chromatic aberration. Its range and aperture lend themselves well to this subject. And because it is so light, it is also a pleasure to use.

Why should you care what I think?

My relationship with this item: Editor review

Conclusions at a glance

Would you recommend this Item: Yes
Pros: Price, sharp, build quality
Cons: not many for this price.