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Sigma 18-50mm f/2.8-4.5 SLD Aspherical DC Optical Stabilized (OS) Lens with Hyper Sonic Motor (HSM) for Canon Digital SLR Cameras |  | Brand: Sigma
Category: Photography
Buy New: $199.00
as of 3/22/2010 05:28 MST details
New (5) from $199.00
Seller: Amazon.com
Rating:  15 reviews
Media: Electronics
Batteries Included: No
Maximum Focal Length: 50
Minimum Focal Length: 18
Shipping Weight (lbs): 0.9
Dimensions (in): 3 x 3 x 3.7
MPN: 18-50mm OS HSM Canon
Model: 18-50mm OS HSM Canon
UPC: 085126861544
EAN: 0085126861544
ASIN: B002330FJ8
Shipping: Eligible for FREE Super Saver Shipping
Availability: Usually ships in 24 hours
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| Features:
| • | Lens Construction - 16 Elements in 12 Groups | | • | Angle of View - 69.3 - 27.9 degrees | | • | Number of Diaphragm Blades - 7 | | • | Minimum Aperture - F22 | | • | Minimum Focusing Distance - 30cm/11.8 in. |
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| Editorial Reviews:
Product Description
An upgrade to its predecessor, the 18-50mm F2.8-4.5 DC OS HSM is a lens dedicated to digital SLR cameras with APS-C size image sensors offering a large aperture and Sigma's Optical Stabilization. The combination of the large aperture of F2.8 and anti-shake function makes capturing exceptional photos in low light achievable, and the wide angle is well suited for indoor photography. Two SLD (Special Low Dispersion) glass elements and three Aspherical lenses provide excellent correction for all types of aberrations. The Super Multi-Layer Coating reduces flare and ghosting. Designed with inner focusing and inner zooming systems, high image quality is assured throughout the entire zoom range. The overall length of the lens does not change during focusing and zooming ensuring convenient handling. This lens has a minimum focusing distance of 11.8 inches (30cm) throughout the entire zoom range and a maximum magnification ratio of 1:4.1. The incorporation of HSM (Hyper Sonic Motor) ensures a quiet and high speed auto focus. Maximum Magnification - 1 - 4.1 Filter Size - Diameter 67mm Dimensions - Diameter 74mm X Length 88.6mm; 2.91 in. x 3.49 in. Weight - 395g / 13.9 oz
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| Customer Reviews:
Showing reviews 1-5 of 15
 Great deal March 18, 2010
Thomas Colvin III (Toney, AL, US)
I was looking for a lens that would allow me to get wide angle indoor shots and great quality outdoor shots of paintings and drawings for publication with my canon eos xsi. this lens is perfect and is the absolute best value on the market!! i've shot a number of sporting venues with this lens and its given me all i hoped for! the wide aperature captures every ounce of light in not-so-perfect conditions for surprisingly accurate images.
Very sharp and fast lens. March 5, 2010
A (SF bay area)
This is a great lens for two hundred bucks. The construction is very nice. Very sharp at over f6. Compare to the Nikon 35mm/1.8 at ~25-40mm f6-11 is very hard if not impossible to tell the differents at the computer. I was a little worry ordering this lens since a lot of people complain about front and back focus. I been a film guy for over 20years and this is my first Digital SLR lens. Very nice contrast and color too.
 Returning this Lens February 27, 2010
maho (US)
0 out of 2 found this review helpful
I just received this lens, and I've decided to return it. The main reason is because it isn't sharp enough, but also, the 2.8 aperture doesn't apply to the full range of the zoom...just the wider end. The maximum aperture at 50mm is 3.5.
 Quite good but not better than the Canon kit lens February 23, 2010
M. Chow
0 out of 1 found this review helpful
It looks more solid than the Canon 18-55 kit lens with its metal mount, but in terms of IQ, it is not better. So the only advantage is its f2.8. Eventually I returned it because I don't think the benefit is worth the investment.
Pentax users beware: low-light shots are no better than kit lens February 13, 2010
Neildo (SLC, UT United States)
2 out of 3 found this review helpful
I bought this lens hoping that the F/2.8 and optical stabilization would provide better indoor shots than the Pentax kit lens 18-55mm F/3.5-5.4. Unfortunately it provides no improvement for low-light shots. I am using this on a Pentax K-x.
The first problem is that despite being F/2.8, it's not a bright lens. At the widest aperture F/2.8 at 18mm, this lens has the same light input as the Pentax kit lens at F/3.5. So the F/2.8 does not provide any shutter speed advantage over the kits lens. At F/3.5, this lens is about 2/3 EV darker than the kit lens at F/3.5. I verified this by taking the same picture with both lenses. This is confirmed by the camera when using aperture priority mode. Setting both lenses to wide open causes the camera to choose the same shutter speed. I was hoping for a 2/3 EV advantage with this lens.
The second problem is that the optical stabilization is only marginally better than the in-camera shake reduction on the K-x. You cannot use both OS and SR at the same time. You have to disable SR to use OS properly.
The 3rd problem is that this lens is quite a bit bigger and heavier than the kit lens. It makes it harder to hold steady for hand-held, indoor shots. These 3 issues lead to the indoor shots being no better then the kit lens.
On the plus side, this lens has better corner sharpness than the kits lens at wide angle and largest aperture. Center sharpness is the same as kit lens. Also, the HSM seems to work well and is slightly quieter than kits lens.
To recap, kit lens is lighter and performs just as well except for corner sharpness. Save your money for something better or stick with the kits lens.
Showing reviews 1-5 of 15
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