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SIGMA
SIGMA 24-70mm f/2.8 DG OS HSM Art Canon EF 576954 camera lens
A versatile zoom for Canon EF covering 24-70mm at a constant f/2.8 with optical stabilisation and weather-resistant construction
- Part576954
- Type19 Elements in 14 Groups
- ColorBlack
- Diameter3.46 inches
- CompatibilityCanon EF
- Focus TypeAuto Focus
- Constant f/2.8 aperture enables low-light shooting across the 24-70mm zoom range
- 19 elements in 14 groups with three SLD and four aspherical lenses reduce aberrations
- Weather-sealed mount and water-repellent front coating protect against dust and splashes
- 82 mm filter thread accepts standard circular filters for creative control
- 1° wide angle of view suits landscape and architectural photography
SIGMA 24-70mm f/2.8 DG OS HSM Art Lens for Canon EF
The SIGMA 24-70mm f/2.8 DG OS HSM Art is a professional zoom lens built for Canon EF-mount cameras. It serves photographers who need a versatile focal range with a constant bright aperture for creative work. The lens is not suited for buyers who require a lighter walk-around optic or those using mirrorless mounts without an adapter.
Constant f/2.8 maximum aperture across 24-70mm
The constant f/2.8 aperture is the specification that determines whether this lens matches the user's needs. It maintains consistent exposure and depth-of-field control throughout the zoom range from 24mm to 70mm. The optical design uses 19 elements in 14 groups, including specialised elements to reduce aberrations.
82mm filter thread and weather-resistant mount
Installation is straightforward: align the red mount index, twist until it clicks, and set the camera to autofocus if desired. The 82mm front thread accepts standard filters, and a rubber seal at the mount provides dust and splash resistance. A common issue is forgetting to switch the focus-mode selector on the lens barrel when changing between auto and manual focus.
Highlights
- Constant f/2.8 aperture enables low-light shooting across the 24-70mm zoom range
- 19 elements in 14 groups with three SLD and four aspherical lenses reduce aberrations
- Weather-sealed mount and water-repellent front coating protect against dust and splashes
- 82 mm filter thread accepts standard circular filters for creative control
- 1° wide angle of view suits landscape and architectural photography
Specifications
| Brand | SIGMA |
|---|---|
| Model | 576954 |
| Part Number | 576954 |
| Part | 576954 |
| Type | 19 Elements in 14 Groups |
| Color | Black |
| Diameter | 3.46 inches |
| Compatibility | Canon EF |
| Focus Type | Auto Focus |
| Focal Length | 24-70mm F2.8 |
| Aperture | 2.8 f_stop |
| Camera Mount | canon_ef |
| Angle of View | 84.1 degrees |
| Filter thread (Diameter) | 82 millimeters |
| Autofocus | Auto Focus |
| Dimensions | 6.93 in x 4.76 in x 4.72 in |
| Weight | 2 lb |
Questions about this item
How does the constant f/2.8 aperture behave across the 24-70mm zoom range on a Canon EF body?
The f/2.8 maximum aperture stays constant from 24mm to 70mm, so exposure settings remain unchanged while zooming and depth-of-field control is consistent throughout the range.
What does the Canon EF mount imply for communication and physical fit on current EOS cameras?
The EF mount provides full electronic autofocus and aperture control on any Canon EOS DSLR; on EOS R mirrorless bodies it requires an EF-EOS R adapter for the same functionality.
Will the 82mm filter thread and 6.93 x 4.76 x 4.72 inch barrel fit my existing filter system and lens pouch?
The front thread accepts 82mm filters, and the barrel measures 6.93 inches long by 4.76 inches wide by 4.72 inches deep, so check those dimensions against your pouch and filter holder clearance.
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