This lens features aspherical elements to produce extra sharp pictures with almost no distortion. It also features "internal focusing" so that the lens does not rotate on the front when focusing, a helpful feature when using a polarizer filter and it's unique (included) lens hood.
Minimum Focus Distance
Angle of View
78 to 11 Degrees
Phoenix Zoom Wide Angle-Telephoto 28-210mm f/4.2-6.5 Aspherical IF Autofocus Lens for Pentax AF