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Two ED glass elements minimize
chromatic aberrations
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Molded-glass aspherical lens for
minimized distortion, higher resolution and superior contrast
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Holds fast and constant f/2.8 maximum
aperture through the entire focal range
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M/A mode for quick switching between
autofocus and manual focus operation
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Nine-blade rounded diaphragm opening
makes out-of-focus elements appear more natural
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Aspherical lens elements
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ED glass elements