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Advanced optical formula with a three-group floating element system for exceptional close-up performance
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Internal focusing means the lens length is constant |
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Secondary diaphragm to block stray light at f/2.8 & increase contrast when shooting in backlit conditions |
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Ultrasonic Motor provides outstanding AF speed at all focusing distances |
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Wide manual focusing ring with smooth action & fulltime manual focus override (even in AF mode) |
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Tripod collar available optionally |