Description

HSM (hypersonic motor) HSM (hypersonic motor) delivers high AF speed and extremely quiet performance.
	Floating system  This system adjusts the distance between lens groups during focusing, thereby reducing the amount of lens movement required resulting less aberration at different shooting distances.
Flare and ghosting reduction SIGMA's Super Multi-Layer Coating reduces flare and ghosting to help photographers produce sharp and high contrast images even in backlit conditions.
	High-precision, rugged brass bayonet mount Its treated surfaces and enhanced strength contribute to the exceptional durability of the lens.
SIGMA USB DOCK make customization simple Users will be able to connect the lens to a computer with a special USB DOCK and use easy-to-operate on-screen controls to create personal lens specifications.
	Exclusive SIGMA Optimization Pro software SIGMA Optimization Pro software that allows the user to update the lens firmware and adjust focus position and other parameters.

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