This fast ultra wide angle zoom is a logical option as a standard lens with its 40mm focal length. Thanks to a large 42.5mm diameter compound aspherical element in the front group, and another aspherical element in the rear group, distortion and comatic aberrations at the wide angle setting are eliminated. Use of a polarizing filter is possible thanks to the internal focusing system and large 77mm filter diameter. A flower-shape bayonet-type lens hood is supplied as a standard accessory.

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