Delivering the reach of a super-telephoto prime with the flexibility of a zoom, this lens maintains a constant f/4 aperture across its entire 300-600mm range, paired with an HLA-driven AF motor and 5.5-stop stabilization. Its weather-sealed magnesium alloy build and internal zoom mechanism ensure robust, balanced handling in demanding field conditions. This lens is best for wildlife and sports photographers who need uncompromising speed and optical quality without swapping fixed focal lengths.
