The Sigma 17-50mm f/2.8 EX DC OS HSM Zoom Lens is an incredibly versatile, lightweight, and compact lens designed specifically for digital SLR cameras with APS-C size sensors. The lens has a fast f/2.8 maximum aperture throughout the entire zoom range. It features a construction of 17 elements in 13 groups with glass that corrects for flare, ghosting and all types of aberrations. It produces high contrast and sharp images throughout the zoom range even at its maximum aperture.

Sigma's OS (Optical Stabilization) feature allows you to shoot at shutter speeds approximately 4 stops slower than would otherwise be possible. This means your images will look sharper, even when shooting without a tripod in low existing light or at maximum range with a flash. This lens is also equipped with Sigma's Hyper-Sonic Motor (HSM) which provides for fast and quiet autofocusing.

The Sigma 17-50mm f/2.8 is ideal for many photo opportunities particularly landscapes and portraits, but with its wide focal range and a close focusing distance down to 11" (28cm) you can capture images with unique perspectives. It will quickly become one of the most important lenses in your gear bag.

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

This lens is for use with digital cameras with APS-C size sensors only. 1
The DC designation on the barrel means that this is a special lens designed so that the image circle matches the smaller size (APS-C) of the image sensor of your digital SLR. Its specialized design gives this lens the ideal properties for digital cameras, including a compact size and lightweight construction.
The 17-50mm f/2.8 offers Sigma's OS System (Optical Stabilization) that allows shooting at shutter speeds approximately 4 stops slower than would be otherwise possible, for sharper handheld photography even in low-light situations.
Constructed with 17 elements in 13 groups, it features FLD ("F" Low Dispersion) glass which is the highest level low dispersion glass available with extremely high light transmission. This glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass. FLD glass offers superior optical performance, equal to fluorite, at an affordable price.
Its HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus.
Sigma lenses are made in Japan.

Notice

1、Customs Duties and Taxes 

All customs taxes/VAT and related charges are not included in the order, these charges are the buyer's responsibility to bear. Please check with your country's customs authority to determine if there will be additional costs or restrictions prior to order.

2、Product Exchange and Return

1)、For the product return,the buyer must contact us first and follow our return policy and procedure. Return without authorization will not be handled.

2)、For a faulty or defective product found within 7 days of receiving, buyer can request a refund or exchange, we will pay for the return shipping cost. But if found buyer misrepresents the condition of the product, we may impose a USD30 handling fee and the product will be returned to you at your expense.

3)、For approved returning, all original packaging materials and accessories must be returned and are in resellable condition. Buyer will take full responsibility of the product damage/lost of the during the return shipping, thus is advised to use insured courier shipping (Fedex, DHL, UPS etc.).

3、Product authenticity 

All products we sell are 100% brand new and genuine. We source products directly from  manufacturers and suppliers all over the world so there may be some differences between packaging and version. If you have any doubt, please contact us before order.