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Top features Super Multi Layer Coating reduces flare and ghosting Excellent image quality thanks to two ELD glass elements Internal focusing for ease of handling Great for filters with a rear filter holder Hyper Sonic Motor delivers fast, silent autofocus Super Multi Layer Coating The Sigma 300 mm f2.8 EX DG APO HSM has a special coating that reduces internal reflection and minimises flare and ghosting, resulting in sharper, high contrast images. Excellent image quality Two ELD Extraordinary Low Dispersion glass elements keep chromatic aberration to a minimum to deliver brilliant results. Internal focusing An internal focusing system means the overall length of the lens stays the same while focusing for convenient handling and fast autofocus. Great for filters Additionally, this lens features a rear drop in 46 mm filter holder, which can be rotated to facilitate the uses of filters such as a polarizing filter. Hyper Sonic Motor The HSM Hyper Sonic Motor operates fast, silent autofocus, which is ideal when shooting video, while full time manual focus override means you don't have to manually switch modes.
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