This telephoto lens modestly lessens the sense of perspective and provides a soft out-of-focus (bokeh) effect. Two extraordinary-low dispersion glass lenses are used for effectively correcting chromatic aberration and spherical aberration. A ghostless coating is applied for effectively eliminating reflections on the inner surface of the lens for providing sharp images with high contrast.

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Also, an inner focus is used for focal point adjustment for improved focusing speed by autofocus operation. This also provides a comfortable operating sensation since the lens length does not change while focusing.