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Item#: 9SIA4P01PC8678
PENTAX smc DA 17-70mm f/4 AL (IF) SDM Lens
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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.

  • newegg Super Protect The 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.
  • newegg Quick Shift Focus System The 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.
  • newegg SDM System The 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


Zoom Lens


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)


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

Manufacturer Warranty

1 year limited
1 year limited

Quick Info


  • Limited Warranty period (parts): 1 year
  • Limited Warranty period (labor): 1 year

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Home > 
Electronics > 
Digital Cameras > 
Camera Lenses > 
Item#: 9SIA4P01PC8678
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