Sigma 12-24mm F4.5-5.6 II DG HSM is an Auto Focus (AF)
Wideangle Zoom lens with 35mm FF max sensor coverage and it is designed to be used with Canon EF mount cameras.
Sigma replaced the older Sigma 12-24mm F4.5-5.6 EX DG Aspherical HSM Canon EF with this model. Follow the link to read our detailed comparison of these models:
Compare Sigma 12-24mm F4.5-5.6 II DG HSM Canon EF vs Sigma 12-24mm F4.5-5.6 EX DG Aspherical HSM Canon EF
Lenses in Canon EF Mount with Same Focal and Aperture Range
Lens Mount
Sigma 12-24mm F4.5-5.6 II DG HSM is compatible with cameras that have
Canon EF lens mount. Some of the latest released cameras with Canon EF lens mount are
Canon 1D X III,
Canon 6D MII and
Canon 5D MIV.
Sensor Coverage
Max sensor coverage of Sigma 12-24mm F4.5-5.6 II DG HSM is
35mm FF.
Focal Range
Sigma 12-24mm F4.5-5.6 II DG HSM has a focal range of 12-24mm and 2.0X zoom ratio. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides an 35mm (FF) equivalent of 19.2 - 38.4mm.
Optical Image Stabilization
Sigma 12-24mm F4.5-5.6 II DG HSM doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Zoom Method
Sigma 12-24mm F4.5-5.6 II DG HSM features
Rotary (internal) zoom method where the length of the lens doesn't change while you are zooming in or out. Even though this design has a size disadvantage in general compare to extending designs, it has the benefits of better sealing against dust and moisture, no zoom creep and no weight balance shift while zooming.
Maximum Magnification Ratio
Sigma 12-24mm F4.5-5.6 II DG HSM has a Max Magnification Ratio of
0.16x and has a minimum focusing distance of
0.28m.
Aperture
Sigma 12-24mm F4.5-5.6 II DG HSM is a variable aperture lens with a max aperture of f4.5 and a minimum aperture of f22 at 12mm, and a max aperture of f5.6 and minimum aperture of f22 at 24mm .
Optical Formula
Sigma 12-24mm F4.5-5.6 II DG HSM's optical formula consists of 17 elements in 13 groups.
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