Sigma 17-50mm f/2.8 EX DC OS HSM
Versatile fast aperture zoom for APS-C sensors
Key Features
Lens Capabilities
Click the Links Below for Details
The Most Important Rings & Switches — Sigma 17-50mm f/2.8 EX DC OS HSM
| Ring / Switch / Control | Status | Note |
|---|---|---|
| Focus Ring | ✓ Present | |
| Zoom Ring | ✓ Present | |
| Aperture Ring | ✗ Not Present | |
| AF/MF Switch | ✓ Present | |
| Image Stabilisation Switch | ✓ Present | |
| Focus Limiter Switch | ✗ Not Present | |
| Function (L-Fn) Button | ✗ Not Present | |
| Zoom Lock Switch | ✓ Present | |
| Optical Image Stabilisation (OIS) | ✓ Present | |
| Weather Sealing | ✗ Not Present |
How-to Use Sigma 17-50mm f/2.8 EX DC OS HSM
Welcome to the How-to section of the lens. In this Light & Composition University website, each page for a lens has a how-to section and a section for learning. The rings, switches and controls of each lens are placed differently between brands and models. The how-to section helps you operate the lens; however, if you are interested in learning photography, you also need to know what each control changes and why you would change it. Click the “Learn” or scroll down.
Learn & Master Photography with Sigma 17-50mm f/2.8 EX DC OS HSM
For over a decade, we have been teaching photography following a university standard. No one does it better than us. We have a selection of courses, diplomas, graduate and post-graduate programs, as well as some of our best-selling university press publications, to guide you in the best possible way for your lens. Enroll in the fundamentals and then move to the genres you want to master.
Technical Specification
| Focal Length | 17-50mm |
| Aperture | f/2.8 constant |
| Lens Construction | 17 elements in 13 groups |
| Minimum Focus | 28cm (11 inches) |
| Filter Size | 77mm |
| Diaphragm Blades | 7 (rounded) |
| Stabilization | Optical Stabilizer (OS) |
| Autofocus Motor | HSM (Hyper Sonic Motor) |
| Weight | 565g |
| Dimensions | 83.5mm x 91.8mm |
