Product Overview
- EF-Mount Lens/Full-Frame Format
 - Aperture Range: f/4 to 22
 - FLD and Aspherical Elements
 - Super Multi-Layer Coating
 - Hyper Sonic AF Motor, Manual Override
 - Rounded 9-Blade Diaphragm
 - TSC Material, Brass Bayonet Mount
 - Dust- and Splash-Proof Construction
 - Compatible with Sigma USB Dock
 
Sigma's third generation 12-24mm f/4 DG HSM Art Lens, available here with a Canon EF mount, refines their ultra-wide arena and delivers an image with little distortion and with a high resolution for crisp photos with a modern full-frame digital image sensor. A member of Sigma's Art series, it boasts high image quality which is helped out by the use of FLD and aspherical elements, including an 80mm large-diameter molded glasses aspherical lens, that minimizes aberrations and distortion. Furthermore, it uses a Super Multi-Layer coating that minimizes flare and ghosting.
Benefitting handling, the 12-24mm is equipped with a Hyper Sonic AF motor with an optimized algorithm for speed and accuracy. The lens also offers a large focusing ring with full-time manual override settings for quickly making adjustments. A rounded 9-blade diaphragm improves image quality by helping create smooth bokeh while the lens is constructed from a lightweight and durable thermally-stable composite. Also, the 12-24mm has a brass bayonet lens mount and is dust- and splash-proof. And, it is fully compatible with Sigma's USB Dock.
Specifications:
Focal Length:     12 - 24mm
Aperture:            Maximum: f/4 ; Minimum: f/22
Camera Mount Type:      Canon EF
Format Compatibility:    35mm Film / Full-Frame Digital Sensor
Angle of View:   122° - 84.1°
Minimum Focus Distance:            9.45" (24 cm)
Magnification:   0.2x
Maximum Reproduction Ratio:   1:4.9
Elements/Groups:           16/11
Diaphragm Blades:          9, Rounded
Autofocus:          Yes
Filter Thread:     None
Dimensions (DxL):           Approx. 4.02 x 5.18" (102 x 131.5 mm)
Weight: 2.54 lb (1.15 kg)
(Also available in Nikon mount)
Trade-ins are welcome!