The SLD glass provides good control of aberrations and the internal focusing system with floating focus ensures high performance across the entire focusing range.
With the use of SIGMA's APO teleconverter, it is possible to take photos at magnification greater than 1:1. The HSM ensures quiet and high-speed AF, as well as full-time manual focus override.
This lens features a rounded 9-blade diaphragm, which creates an attractive blur in out-of-focus areas.