Ultra-low dispersion glass and three high-precision aspherical lens elements, each of a different type: ground, replica and GMo minimize aberrations and improve overall image quality.

A ring-type Ultrasonic motor (USM) provides quiet, fast, precision auto focusing and predictive tracking.

Full-time manual focus override (even in AF mode) is supported.

Circular aperture diaphragm produces brilliant out-of-focus characteristics.

A petal-type lens hood is included.