Lens Summary
Brand: Sigma
Also Known As: Sigma 17-70mm f/2.8-4 Macro
Lens Type: Zoom Lens
Format: APS-C / DX
Focus: Autofocus
Lens Mount: Canon EF, Nikon F, Sigma SA
Release Date: 2009-12-04
MSRP Price: $379
Made in: Japan
Infrared Rating: Poor
Production Status: In Production
Lens Description: Sigma’s 17-70mm f/2.8-4 DC Macro OS HSM is the practical zoom! A large-aperture, standard zoom lens for digital cameras with an open-aperture value of f/2.8 (at 17mm) and covers the most frequently used focal lengths. With an aperture fast enough to be used in many light situations, its close focusing for use with very small object and its outstanding optical performance make this an ideal all-around lens for landscapes, portraits, still life studies, group shots and just about any everyday photo situation. 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 ensures quiet and high speed AF capability. With a faster aperture than the typical camera “kit lens” it is an excellent choice for the photographer who has higher expectations for their photo equipment.
Sigma 17-70mm f/2.8-4 DC Macro OS HSM Specifications
| Lens Specifications | |
|---|---|
| Lens Type | Zoom Lens |
| Focal Length | 17-70mm |
| Mount Type | Canon EF, Nikon F, Sigma SA |
| Format | APS-C / DX |
| Compatible Format(s) | APS-C Sensor, Nikon DX, FX in DX Crop Mode |
| Compatible with Teleconverters | No |
| Zoom Ratio | 4.11x |
| Maximum Reproduction Ratio | 1:2.7 |
| Optical Stabilization (Image Stabilization) | Yes |
| Aperture Information | |
| Aperture Ring | No |
| Maximim Aperture | f/2.8-4.0 |
| Minimum Aperture | f/22 |
| Maximum Angle of View (APS-C or smaller format) | 72.4° - 20.2° |
| Optical Information | |
| Lens Elements | 17 |
| Lens Groups | 13 |
| Diaphragm Blades | 7 |
| Extra-Low Dispersion Glass Elements | 1 ELD glass element 1 hybrid aspherical element 2 glass mold elements |
| Focus Information | |
| Focus | Autofocus |
| Built-in Focus Motor | Yes |
| Hyper Sonic Motor (HSM) | Yes |
| Internal Focusing | Yes |
| Minimum Focus Distance | 0.22m |
| Distance Information | Yes |
| Filter Information | |
| Filter Size | 72mm |
| Accepts Filter Type | Screw-on |
| Physical Characteristics | |
| Weather / Dust Sealing | No |
| Mount Material | Metal |
| Dimensions | 79 x 82mm |
| Weight | 535g |
| Other Information | |
| Available in Colors | Black |
Lens Construction
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