Sigma 150mm f/2.8 APO Macro EX DG HSM lens

The Sigma 150mm 2.8 APO Macro EX DG HSM is a telephoto macro prime lenses made by Sigma Corporation.

The lens was produced for the SA mount, Canon EF mount, Four Thirds System, and the Nikon F-mount; all have the same optical formula.

Technical information
The Sigma 150mm 2.8 APO Macro EX DG HSM is a consumer-level macro lens. It is constructed with a plastic body and a metal mount. This lens features a distance window with magnification scale. A nine-blade, maximum aperture of 2.8 gives this lens the ability to create very shallow depth of field effects. The optical construction of this lens is made up of 16 lens elements, including two SLD (Special Low Dispersion) elements. This lens uses an inner focusing system, powered by a ring type HSM motor. Auto focus speed of this lens is slow in absolute terms, being a macro lens it is not as fast as most ring HSM lenses. The front of the lens does not rotate nor extend when focusing. This lens is compatible with Sigma teleconverter lenses.