For fans of versatile telephoto-to-super-telephoto zoom lenses, Sigma is not letting Tamron have all the fun, announcing not one but two variants of a full-frame 150-600mm f/5-6/3 image stabilized lens. Tamron's all-around 150-600mm f/5-6.3 Di VC USD SP will now have some healthy competition, thanks to the announcement of the 150-600mm F/5-6.3 DG OS HSM Sports and 150-600mm F/5-6.3 DG OS HSM Contemporary lenses.
Why two lenses with the same range? The 'Sport' version of this “hyper-telephoto zoom” lens, as Sigma puts it, is a…
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