Shoot extreme close-ups, mid-distance action shots, and portraits without the bulk of longer lenses. This jack-of-all-trades for the on-the-go photographer provides the highest level of optical quality. It is ideal for the photographer who wants a quality standard zoom lens with extra telephoto performance and a silent SDM autofocus motor.
Super ProtectThe front lens elements of the lenses use the special Pentax SP - "Super Protect" - fluoride coating technology. This nano-technology protects the front lens against dust, finger marks or smearing, making the lenses exceptionally easy to clean.
Quick Shift Focus SystemThe Pentax "Quick Shift Focus System" allows the photographer to manually alter the focus point at will without having to take the camera out of the auto-focus mode.
SDM SystemThe Pentax smc DA 17-70mm f/4 AL (IF) SDM Lens features a motor driven by supersonic waves for a quiet, high-speed auto focus.
Learn more about the PENTAX 21740
Model
Brand
PENTAX
Model
21740
Details
Type
Zoom Lens
Diameter
67 mm
Specifications
Lens Mount: PENTAX KAF3
Focal Length: 17-70mm (equiv. 26-107mm)
Aperture: f/4
Minimum Aperture: f/22
Lens Construction: 17 elements in 12 groups
Angle of View: 79-23 degrees (w/PENTAX DSLR)
Minimum Focusing Distance: 0.92' (0.28m)
Maximum Magnification: 0.31X
Diaphragm Control: Fully Automatic
Number of Aperture Blades: 7
Lens Aperture Ring: N/A
Tripod Adapter: N/A
Hood: PH-RBM 67mm
Objective Cap: O-LC67
Case: S90-140
Maximum Diameter x Minimum Length: 3.0 x 3.7" (75 x 93.5mm)
Weight (w/o Hood): 17.1 oz. (485g)
Features
Features
Extra zoom for a wide range of shooting applications from wide angle to telephoto.
Exclusive lens SDM autofocus motor ideally complements modern PENTAX DSLR bodies with SDM capabilities.*
PENTAX SP (Super Protect) coating protects the exposed lens elements.
Quick-shift Focus System allows instant switching from auto to manual focus.
Developed specifically for PENTAX digital SLRs.
Focal length equivalent to 26-107mm in 35mm format.
*SDM-only focusing lens can still be used with non-SDM PENTAX DSLR bodies in manual focus mode