Photokina News: Sigma takes the long view with its new Sports lens

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Sigma has announced a new 500mm f/4 lens in its Sports range that will appeal to both sport and wildlife photographers.
The company says this new lens is the flagship of its Sports line-up, and that it offers enhanced resistance to dust and moisture including a water-repellent coating on the forward element. The company has used magnesium alloy for the construction of the main barrel and carbon fibre for the hood in an attempt to reduce the overall weight of the lens, and uses FLD and SLD to control chromatic aberrations that degrade sharpness and create coloured fringing at the edges of the imaging circle.
A drop-in filter holder near the rear of the lens is designed for the company’s circular PL RCP-11 filter, and the lens is compatible with Sigma’s 2x and 1.4x teleconverters. The dual-mode OS system offers up to 4-stops of stabilisation with modes for general photography and for situations in which the user is panning with a fast moving subject.
The lens has a brass mount and measures 144.8×380.3mm. It weighs 3310g. No on-sale date has been announced, but the lens is expected to cost £5999.
Find more information here.