Prime / alpha-a
The SIGMA APO 500mm F4.5 EX DG / HSM is a super-telephoto prime lens suited to photographing birds, wildlife, and sports.
According to the provided information, it is designed for the Sony A-mount and features the EX series’ robust construction along with fast, quiet autofocus driven by HSM.
Its 500mm angle of view is well suited to shooting from a distance.