Sigma 18-50mm f2.8 EX DC Macro HSM  Hot

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Lenses Sigma
User rating
4.8
out of 5
Editor's rating
4.0
out of 5
Lens Summary

Overview

Large aperture zoom lens designed specially for use with digital SLR cameras with a minimum focusing distance of 20cm (7.9").

This lens is specially designed to suit the characteristics of digital SLR cameras and provides a high level of optical performance. It has a large aperture of F2.8 throughout the entire zoom range, offers superior peripheral Brightness as well as a compact and lightweight construction. A maximum magnification of 1:3, making it ideal for close-up photography.

A minimum focusing distance of 20cm (7.9"), a maximum magnification of 1:3

This large aperture standard zoom lens, with close-up ability, is ideal for portrait and snap shots.

Large aperture of F2.8 throughout the entire zoom range

Large aperture enables easy confirmation of focusing from bright viewfinder. This lens is perfectly suited for low light conditions indoors or at dusk.

Excellent optical design

Special Low Dispersion (SLD) and Extraordinary Low Dispersion (ELD) glass elements provide excellent correction of color aberrations. This lens produces an exceptional level of optical performance.

Compact and lightweight lens

Its design incorporates both glass-mold and hybrid Aspherical lens technology which offers a compact and lightweight construction.

Reduced Ghosting and Flare

The super multi-layer lens Coating reduces flare and ghost. High image quality is assured throughout the entire zoom range.

Inner Focus System

An Inner focusing system eliminates front lens rotation, making the lens particularly suitable for using the petal-type lens hood (supplied) plus circular polarizing filters.

HSM (Hyper Sonic Motor) for Nikon Mounts Only

The Incorporation of HSM is capable of autofocusing with all Nikon DSLR cameras.

Lens Specifications

Generic Lens Specifications
Lens Type: Zoom
Lens Special Features: Macro
IS / VR / OS: None
Min Focal length (mm): 18
Max Focal Length (mm): 50
Number of Elements: 15
Element Groups: 16
Max Aperture: 2.8
Minimum Aperture: 22
Diaphragm Blades: 7
Closest Focus Distance (m): 0.02
Maximum Magnification: 1.3
Filter Type: Screw In
Filter Diameter (mm): 72
Diameter at widest (mm): 79
Lens Length (mm): 85
Weight (g): 535
Release Date: Jan 08

Details


Lens Construction

15 Elements in 13 Groups

Angle of view 76.5 - 31.7 degrees
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 85.3mm
3.1 in. X 3.4 in.
Weight 535g/18.9 oz.
Corresponding AF Mounts


NIKON

* The appearance, specifications, and the like of the product are subject to change for improvement without notice.

*Vignetting will occur if the lens is used with digital cameras with image sensors larger than APS-C size or 35mm SLR cameras.

* The angle of view depends upon the digital camera being used.

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Editor review : Sigma 18-50mm f2.8 EX DC Macro HSM
Overall rating (weighted)
4.0
Sharpness
4.0
Build Quality
3.0
AF Speed
4.0
Value for Money
5.0
This is a great lens for the money and is very well built. The heavy feel may not appeal to all users, but for a fast aperture offering this lens is well priced. IMages taken though this lens are very good and the optic has a good close up performance and is simple ti use. The range of mounts available covers almost all DSLR formats.
Why should you care what I think?
My relationship with this item: Editor review
Where did you buy this item?: N/A
When did you buy this item?: N/A
Conclusions at a glance
Would you recommend this Item: Yes
Pros: Good all round lens for the money
Cons: Could have been sharper in the corners wide open.
Last updated: Saturday, 28 June 2008


User Lens Reviews

Average user rating from: 1 user(s)

Overall rating (weighted)
4.8
Sharpness
5.0
Build Quality
5.0
AF Speed
4.0
Value for Money
5.0
 

Add new review


8 of 8 people found the following review helpful

Very Useful Optic, Monday, 10 March 2008


Overall rating (weighted)
4.8
Sharpness
5.0
Build Quality
5.0
AF Speed
4.0
Value for Money
5.0
This is now my standard lens on my 400D. It feels solid and very well made. Optical performance is excellent for a lens in this class. I'd thoroughly recommend it. I had a slight imperfection in one of the real elements on my original lens. I called Sigma and they said to send it back. I posted the lens on the Monday and a replacement arrived on Wednesday.
Why should you care what I think?
My relationship with this item: I own it
Where did you buy this item?: Warehouse Express
Price paid: 280
When did you buy this item?: November 2007
Conclusions at a glance
Would you recommend this Item: Yes
Pros: Build quality, Price, sharpness
Cons: Not found any yet
Was this review helpful to you? yes     no


 
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