Sigma is a Japanese based family owned manufacturer of DSLR cameras, camera lenses and camera accessories. Liked by everyone is that Sigma lenses are typically value-priced. Sigma lenses are available in Canon, Nikon and other brands.
DC lenses have an image circle that covers APS-C size image sensors. Not for use on digital cameras having image sensors larger than APS-C size or on 35mm or APS film cameras, as vignetting will occur. The angle of view varies depending on which camera the lens is mounted on. To find the 35mm camera-equivalent focal length, multiply the DC lens focal length by the crop factor (digital multiplier) of 1.5, 1.6, or 1.7, depending on the brand of DSLR camera on which the lens will be used.
Lens Type | Zoom lens |
Max Format Size | APS-C / DX |
Angle of View | 76.5 - 44.2 degrees |
Focal Length | 18–35 mm |
Image Stabilization | No |
Lens Mount | Canon EF-S, Nikon F (DX), Pentax KAF, Sigma SA Bayonet, Sony/Minolta Alpha DT |
Maximum Aperture | F1.8 |
Minimum Aperture | F16 |
Diaphragm Blades | 9 Blades (Rounded diaphragm) |
Lens Construction | 17 elements in 12 groups, 5 SLD glass elements, 4 glassmold aspherical elements |
Minimum Focus | 0.28 m (11.02″) |
Maximum Magnification | 0.23× |
Autofocus | Yes |
Motor Type | Ring-type ultrasonic |
Focus Method | Internal |
Filter Thread | 72.0 mm |
Weight | 810g / 28.6oz. |
Dimension | 78mm x 121.0mm / 3.1in. x 4.8in. |
Advanced Features | Distance scale : Yes, DoF scale : No |
DC lenses have an image circle that covers APS-C size image sensors. Not for use on digital cameras having image sensors larger than APS-C size or on 35mm or APS film cameras, as vignetting will occur. The angle of view varies depending on which camera the lens is mounted on. To find the 35mm camera-equivalent focal length, multiply the DC lens focal length by the crop factor (digital multiplier) of 1.5, 1.6, or 1.7, depending on the brand of DSLR camera on which the lens will be used.