Reviews & Ratings:
Overall (0)
Expert (0)
User (0)
Customer (0)
write a review ...

 top   specification   overview   in the box   customer reviews   more reviews 

Sigma 17-50mm F2.8 EX DC OS HSM Zoom IS Lens

• For use with smaller chip APS-c digital cameras only

• Offers Sigma’s OS System (Optical Stabilization) allowing handheld photography even in low-light situation

• HSM (Hyper-Sonic Motor) ensures a quiet & high-speed auto focus

• FLD glass elements with performance equal to fluorite glass for compensate for color aberration

• Ultra compact with overall length of just 3.6”

• A lens hood, front & rear lens cap and carrying case are included with the lens.

Sigma’s new 17-50mm F2.8 EX DC OS HSM large-aperture standard zoom lens covers a focal length from 17mm wide angle and offers a large aperture of F2.8 throughout the entire zoom range, making it ideal for many types of photography especially portraiture and landscapes. The OS, Sigma’s anti shake feature offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. The OS feature allows Sony and Pentax users the option of viewing a stabilized image in the viewfinder, a feature offered only by Sigma. HSM provides fast and quiet AF. Sigma’s own FLD glass elements, which have performance equal to fluorite along with two glass mold and one hybrid aspherical lens, provide excellent correction for all types of aberrations. The Super Multi-Layer coating reduces flare and ghosting. This lens boasts superior peripheral brightness and provides sharp, high contrast images even at the maximum apertures. With a minimum focusing distance of 11 inches throughout the entire zoom range and a magnification ratio of 1:5. When you need to stand ready for any photo opportunity you need a fast aperture so you can shoot in low existing light or at maximum range with a flash. This Sigma lens is perfect. With its compact size and light weight, it’s a necessary addition to your camera bag.

The OS function offers the use of shutter speeds approximately 4 stops slower than would otherwise be possible. The lens has a compact construction with an overall length of 91.8mm making it ideal for travel photography. Two FLD (“F” Low Dispersion) glass elements, two glass mold and one hybrid aspherical lens provide excellent correction for all types of aberrations. This lens has superior peripheral brightness and provides sharp and high contrast images even at the maximum apertures. The incorporation of HSM (Hyper Sonic Motor) provides fast and quiet AF.

Features

FLD (“F” Low Dispersion) glass elements

FLD glass is the highest level low dispersion glass available with extremely high light transmission. This optical glass has a performance equal to fluorite glass which has a low refractive index and low dispersion compared to current optical glass. It also benefits from high anomalous dispersion. These characteristics give excellent correction for residual chromatic aberration (secondary spectrum) which cannot be corrected by ordinary optical glass and ensures high definition and high contrast images.

This lens incorporates two FLD glass elements, which compensate for colour aberration. In addition, two glass mold elements and one hybrid aspherical lens give excellent correction for field curvature and astigmatism. High definition images are ensured throughout the entire zoom range .

Sigma’s unique Optical Stabiliser technology

The lens is equipped with Sigma’s own unique OS function. This system allows the photographer to use shutter speeds approximately 4 stops slower that would otherwise be possible.

Large aperture throughout the entire zoom range

The large F2.8 aperture allows the use of fast shutter speeds and provides a bright viewfinder image, helping the photographer confirm accurate focusing. It is also ideal for emphasizing the subject by creating a natural, blurred background.

Covering a wide range of focal lengths

This lens covers a wide range of focal lengths from 17mm and has an equivalent angle of view of a 25.5-75mm with a 35mm SLR camera. It is ideal for general photography as well as portraits and landscapes.

The angle of view varies depending on which camera the lens is mounted on.

Compact construction

The lens has a compact construction with a diameter of 83.5mm, overall length of 91.8mm and weight of 565g. This compact and lightweight construction makes it ideal for travel photography.

Super Multi-Layer Coating and superior peripheral brightness

The Super Multi-Layer Coating reduces flare and ghosting as well as providing sharp and high contrast images throughout the entire zoom range. This lens also benefits from superior peripheral brightness and provides sharp and high contrast images even at the maximum apertures.

Fast and quiet AF with internal focusing

The lens incorporates HSM (Hyper Sonic motor), ensuring fast and quiet AF. The inner focusing system eliminates front lens ration, making the lens particularly suitable for using the supplied petal-type hood and circular polarising filters.

For Pentax mount, AF will not function with DSLR cameras that do not support HSM.

Close focusing capability

This lens has a minimum focusing distance of 28cm throughout the entire zoom range and a maximum magnification ratio of 1:5.

Rounded diaphragm

This lens has rounded 7 blade diaphragm which creates an attractive bokeh to the out of focus area of the image.

• 17-50mm f/2.8 EX DC OS HSM
• Lens Hood
• Fitted Padded Case
• Front and Rear Caps
• Instruction Manual
• Warranty Card

Be the first to Review this Product

 top   specification   overview   in the box   customer reviews   more reviews