Combining the reach, speed, and optical quality of a super-telephoto prime with the versatility of a zoom, the Sigma 300-600mm f/4 DG OS Sports Lens is a well-rounded workhorse built for photographing sports, wildlife, and other distant action subjects.

Combining a constant f/4 maximum aperture with quick AF, robust image stabilization, and a durable design, this impressive lens can easily replace a series of telephoto primes without sacrificing on weight or speed.
 
Super-Telephoto Flexibility
Spanning a 300-600mm range with a constant f/4 maximum aperture, this zoom can effectively replace several super-telephoto primes without giving up speed. The maximum f/4 aperture keeps weight manageable while still offering a bright enough design for depth of field control and to suit shooting in available light conditions.

The lens also features an internal zoom and internal focus design, which maintains the overall length of the lens during operation and also reduces center of gravity fluctuations for stable and predictable handling when working on a monopod or tripod.
 
Professional-Grade Optics with Constant f/4 Aperture
A series of low dispersion and high refractive index glass elements ensures high clarity, sharpness, and color accuracy throughout the zoom and focusing ranges. Chromatic aberrations are well-controlled and a front Nano Porous Coating (NPC) reduces flaring and ghosting for high contrast.
Advanced Autofocus and Optical Stabilization
 
HLA-Driven AF
A combination of high-speed, nimble focusing performance and robust image stabilization makes this zoom ideal for tracking distant moving subjects.

A high-thrust HLA (High-response Linear Actuator) quickly moves the lightweight focusing group for quick focus switching and nimble tracking of fast-moving subjects.

A new function ring can be configured to control one of two settings, depending on how its settings switch is set: in Focus Preset Mode, turning the ring will instantly shift focus to a pre-registered position. In Power Focus Mode, turning the ring allows for constant speed focus pulling (useful during video shooting) and the focus speed can be changed in two steps.

Four separate AFL buttons make it easy to control focus position while tracking subjects.

Focus Mode and Focus Limiter switches give further control on focus speed and range for even more control depending on what the subject is and how far away it is.