Large aperture standard zoom lens
with a minimum focal length of 17mm, designed exclusively for digital SLR cameras
and incorporating Sigma's original
OS (Optical Stabilizer).
Large aperture standard zoom lens with a minimum focal length of 17mm, designed exclusively for digital SLR cameras and incorporating Sigma’s original OS (Optical Stabilizer). The OS function offers superior Stabilization. The lens has a compact construction with an overall length of 91.8mm. This compact and lightweight construction makes the lens 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.
* Sony A-mount is not incorporated with OS function.
Features
FLD ("F" Low Dispersion) glass elements
Two FLD (“F” Low Dispersion) glass elements, which have the performance equal to fluorite glass, compensate for color 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.
Super Multi-Layer Coating
The Super Multi-Layer Coating reduces flare and ghosting as well as providing sharp and high contrast images throughout the entire zoom range.
Sigma's own unique OS (Optical Stabilizer) technology
The lens is equipped with Sigma’s own unique OS (Optical Stabilizer) function. The OS function offers superior stabilization.
With Optical Stabilizer
No Optical Stabilizer
Superior peripheral brightness
This lens has superior peripheral brightness and provides sharp and high contrast images even at the maximum apertures.
Fast and quiet AF
The lens incorporates HSM (Hyper Sonic motor), ensuring fast and quiet AF.
F2.8 Large aperture throughout the entire zoom range
The large aperture 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 and allowing the use of fast shutter speeds.
Minimum focusing distance of 28cm, Maximum magnification ratio 1:5
Offering minimum forcusing distance of 28cm throughout the zoom range and maximum magnification of 1:5. Allows close up photography.
Covering a wide range of focal lengths from 17mm
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 portraits, landscapes and general photography.
* The angle of view varies depending on which camera the lens is mounted on.
Rounded diaphragm
This lens has rounded 7 blade diaphragm which creates an attractive bokeh to the out of focus area of the image.
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.
Inner focusing system
The inner focusing system eliminates front lens ration, making the lens particularly suitable for using the supplied petal-type hood and circular polarizing filters.
Specifications
17-50mm F2.8 EX DC OS HSM
Lens Construction
- FLD glass
- ASPHERICAL LENS
Lens Construction
17 elements in 13 groups
Angle of View
- 79.7 - 31.7°
Number of Diaphragm Blades
7 Blades (Rounded diaphragm)
Minimum Aperture
F22
Minimum Focusing Distance
28cm / 11in.
Maximum Magnification Ratio
1：5
Filter size
φ77mm
Dimensions (Diameter × Length)
- ⌀83.5mm × 91.8mm / ⌀3.3in. × 3.6in.
- *The length of a lens is measured from the filter surface to its mount.
Weight
- 565g / 19.9oz.
Supplied Accessories
CASE and PENTAL TYPE LENS HOOD (LH825-03) Supplied.
Performance / Data
MTF Chart
| Spatial frequency | S:Sagittal Line | M:Meridional Line |
|---|---|---|
| 10lp/mm |
|
|
| 30lp/mm |
|
Distortion
Vignetting
| F2.8 |
|
|---|---|
| F5.6 |
|
| F11 |
|
| F2.8 |
|
|---|---|
| F5.6 |
|
| F11 |
|
Product Lineup
17-50mm F2.8 EX DC OS HSM
- Supplied Accessories
CASE and PENTAL TYPE LENS HOOD (LH825-03) Supplied.
Support
17-50mm F2.8 EX DC OS HSM
Accessories
Supplied Accessories
LENS HOOD LH825-03
FRONT CAP LCF-77mmⅢ
REAR CAP LCR Ⅱ
* The image is for SIGMA.
-
Nikon F mount
-
Canon EF mount
-
Sony A-mount
Separately Sold Accessories
WR PROTECTOR 77mm
Water-repellent, Antistatic type. Protector is developed to protect the lens surface from dirt and dust as well as scratches. It is an ideal filter for regular use as it is completely colorless so does not affect color reproduction.
* Thinner frame wide type.
PROTECTOR 77mm
Normal type. Protector is developed to protect the lens surface from dirt and dust as well as scratches. It is an ideal filter for regular use as it is completely colorless so does not affect color reproduction.
* Thinner frame wide type.
WR UV FILTER 77mm
UV Water-repellent, Antistatic type. UV filter prevents the bluish tone that generates when the weather is fine, by absorbing ultraviolet rays. It is effective in most situations, such as landscape, portrait and general photography on a sunny day. It is also an ideal filter for regular use as it is completely colorless so does not affect color reproduction.
* Thinner frame wide type.
WR CIRCULAR PL FILTER 77mm
PL Water-repellent, Antistatic type. Circular PL filter removes the reflection of water surface and glass windows, and increases the contrast in landscape photography.
* Thinner frame wide type.