This lens is an indispensable tool for ambitious photographers. With a 26 107 mm focal length (in 35mm film format) it offers the crucial plus of additional range when normal standard zooms generally extend to 45 or 55mm.
Not only the focal length range is remarkable: with the KAF3 lens mount it relinquishes the classical mechanical autofocus drive for the first time in favour of faster and quieter ultrasonic technology. The lens construction: 17 elements in 12 groups, including 2 aspherical lens elements guarantors of outstanding pictures.
Important details, such as fixed aperture throughout the zoom range provide for excellent control
- Focal Length 17 – 70mm
- Equivalent to 35mm format 25.5 – 105mm
- Maximum aperture f/4.0
- Minimum aperture f/22
- Angle of View 79 – 23°
- Construction 17 elements / 12 groups
- Focusing Range 0.28m – infinity
- Magnification 0.31x Max
- Filter size 67mm
- Mount PENTAX K-AF
- Weight 485g