Sigma 17-50mm f/2.8 EX DC OS HSM Lens for Canon
 
Fast constant-aperture standard zoom with Optical Stabilizer and HSM autofocus for Canon APS-C DSLR cameras
The Sigma 17-50mm f/2.8 EX DC OS HSM is a versatile standard zoom designed for Canon APS-C DSLR cameras. Its constant f/2.8 maximum aperture throughout the zoom range makes it well suited for everyday photography, portraits, events, indoor shooting and lower-light situations.
This lens combines Sigma’s Optical Stabilizer (OS) with Hyper Sonic Motor (HSM) autofocus and offers a useful 17-50mm range equivalent to approximately 27-80mm on a Canon APS-C camera.
 
Condition:
Excellent physical and working condition with no significant cosmetic damage or functional issues. Fully tested; autofocus, zoom, focus and Optical Stabilizer operate normally.
Front and rear glass elements are clean and clear with no visible dust, haze, mold or fungus.
 
Includes:
Sigma 17-50mm f/2.8 EX DC OS HSM lens
Front lens cap
Rear lens cap
Not included: Lens hood, case, original box, filters or other accessories
 
Key Features:
Constant f/2.8 maximum aperture throughout the 17-50mm zoom range
Designed for Canon APS-C DSLR cameras
Versatile wide-angle to short-telephoto standard zoom range
Optical Stabilizer (OS) helps reduce camera shake when shooting handheld
Hyper Sonic Motor (HSM) autofocus system
Internal focusing design
Minimum focusing distance of approximately 28 cm / 11"
Zoom lock switch helps prevent unwanted lens extension during transport
77mm front filter thread
Excellent general-purpose choice for portraits, travel, events and everyday photography
 
Technical Specifications:
Brand: Sigma
Model: 17-50mm f/2.8 EX DC OS HSM
Lens Type: Standard zoom
Mount: Canon EF mount; designed for APS-C format
Focal Length: 17-50mm
Maximum Aperture: f/2.8 constant
Minimum Aperture: f/22
Autofocus Motor: HSM
Image Stabilization: Sigma Optical Stabilizer (OS)
Minimum Focus Distance: Approx. 28 cm / 11"
Filter Size: 77mm
 
Frequently Asked Questions:
Q: Is this lens intended for full-frame Canon cameras?
A: No. This is a Sigma DC lens designed for Canon APS-C DSLR cameras.
Q: What is the equivalent focal range on a Canon APS-C camera?
A: Approximately 27-80mm in 35mm/full-frame equivalent terms.
Q: Does the aperture remain at f/2.8 when zooming?
A: Yes. It has a constant f/2.8 maximum aperture throughout the entire 17-50mm range.
Q: Does it have image stabilization?
A: Yes. The lens features Sigma’s built-in Optical Stabilizer system.
Q: What is this lens best suited for?
A: Its range and constant f/2.8 aperture make it useful for everyday photography, portraits, events, travel, indoor photography and lower-light shooting.