Its design includes a 9-blade circular aperture that produces rounded, natural-looking backgrounds. Two compound aspherical elements greatly reduce aberrations, while a flare-cutter minimizes flare at all times.
* Lens construction: 16 elements in 11 groups
* Angle of view: 75-34 degrees
* Minimum focusing distance: 2 ft 9 inches
* Minimum F/stop: F/22
* Filter size: 72mm
* Weight: 30 oz.