The Pentax C61248 Zoom Lens (55x) has a variable focal length ranging from 12 to 660 mm, an aperture ratio of 1:4.0 to 1:18.2, and an iris range of f/4.0 to f/360. Autofocus adjusts the amount of light passing through the lens. With PAIR (Pentax Atmospheric Interference Reduction) system technology, the lens can eliminate noise (graininess) caused by snow, smoke, sand, rain, and fog.
Focal length varies from 12 - 660 mm
Aperture ratio - 1:4.0 - 1:18.2
Iris range - f/4.0 to f/360 (continuous)
Autofocus adjusts the amount of light passing through the lens
PAIR (Pentax Atmospheric Interference Reduction) system technology - eliminates noise (graininess) caused by snow, smoke, sand, rain, and fog