Pentax SMCP-DA 17-70mm F4 AL (IF) SDM Super
Wide Angle Auto Focus Zoom Lens
The Pentax 17-70mm f/4 SMC DA AL [IF] SDM lens
is designed for exclusive use with Pentax digital SLR cameras. This standard
lens with extra zoom offers outstanding, well-balanced handling, and covers the
most frequently used focal lengths between wide-angle and telephoto.
It is ideal for a variety of shots including scenery, snapshot and
This lens features a 4.1X zoom ratio covering wide-angle to moderate-telephoto
ranges, and covers a focal-length range from 26mm wide angle to 107mm telephoto
in the 35mm format. When mounted on a DSLR camera body, the PENTAX-original
SDM system driven by a built-in supersonic motor, which iss exceptionally
smooth, quiet autofocus.
This lens is compatible with the K20D, K200D, K100D Super and K10D (with Ver.
1.30 or later firmware installed) and later PENTAX DSLR camera bodies. When
mounted on other camera bodies, the focus mode is automatically switched to
This Pentax 17-70mm lens also features PENTAX SP (Super Protect) coating that
protects the exposed lens elements and repels dust, water and grease. It also
features a Quick-shift Focus System that allows instant switching from auto to
manual focus with a turn of the focus ring.
Important features of this lens include:
Exceptional Image Clarity
Two hybrid aspherical (AL) optical elements, yields exceptional image quality
while effectively compensating for various aberrations.
Maximum Aperture of 4 throughout Zoom Range
With a maximum aperture of f/4 over the entire zoom range, the lens allows
photographers to use higher shutter speeds to minimize camera shake (especially
in telephoto applications) or reduce the depth of field to intentionally throw
the background out of focus.
Close Minimum Focusing Distance
This lens offers a minimum focusing distance of 11 inches (0.28 meters) over the
entire zoom range, and an Inner-Focus (IF) optical design that eliminates lens
extension and retraction during focusing operation.
Digital SLR Optical Design
From lens coating to the positioning of optical elements, the lens optics are
meticulously designed to optimize the lens's digital imaging characteristics.
The image circle is perfectly proportioned to a PENTAX camera's image-sensor
Notes SDM focusing only (body will not drive focus,
must use with SDM capable camera or focus manually on a non-SDM capable camera),
Quick-shift Focus, SP (Super Protect) Coating, Hood filter window
Pentax 17-70mm SMCP-DA F4 IF Lens
F stop range
Minimum F stop: 22
17 elements in 12 groups
Angle View -
79° - 23° (with Pentax
Closest Focusing Distance
0.28m (0.92 ft.)
Dimensions (Length x
3.7" x 3.0" (93.5MM x 75mm)
Minimum Focusing Distance
485g (17.1 oz.) without
hood; 515g (18.2 oz.) with hood
Kit Content Pentax 17-70mm F4 SMCP-DA IF AF Lens
Pentax Lens Hood
Pentax front & back caps
For more information about, Pentax SMCP-DA 17-70mm F4 AL (IF) SDM AF Lens for Digital SLR website.