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K-mount Lenses

Discontinued:Standard Lenses Wide-Angle Lenses Standard Lenses Telephoto Lenses Macro Lenses

smc PENTAX-DA 17-70mmF4AL[IF] SDM

  • Zoom
  • DA

High-magnification 4.1X zoom lens with a focal length equivalent to 26mm to 107mm in 35mm film format.

This single lens features a wide usage range for unfettered shooting and control of out-of-focus (bokeh) effect. Two aspherical lenses are used to correct various types of aberrations and provide delineation performance over the entire zoom range. The ultrasonic motor drive AF mechanism (SDM), inner focus system, and other components make this a high-performance standard zoom lens that also enables smooth and easy operation.

Digital SLRs only SDM Quick-Shift Focus SP Coating Aspherical Lens (AL) Inner Focus (IF)

Hood : PH-RBM67 Included, Case : S90-140 Optional
JAN-Code / 4961333 141227

Sample Images

  • Photo by GION

    Aperture F8.0, Shutter speed 1/250sec, Focal length 40mm

  • Aperture F8.0, Shutter speed 1/40sec, Focal length 40mm

  • Photo by GION

    Aperture F11, Shutter speed 1/6sec, Focal length 40mm

Features / Specifications

Ultrasonic motor is used in the lens for providing an "SDM" mechanism enabling quiet and smooth autofocus operation.
Easy to use and high magnification zoom at more than 4X from wide to telephoto for wide coverage range.
Two aspherical lenses (AL) are used for realizing sharp delineation performace with reduced aberrations.
IF (inner focus) optical system for correcting various types of aberrations at all shooting distances. The lens length does not change during focusing for easy handling without becoming unbalanced.
Quick-Shift Focus System that enables manual focusing after focusing by the AF without any need for a switching operation.
SP (super protect) coating on the front lens for repelling water and dirt

*AF is for SDM only, and this is not supported by the body AF. The compatible models are the K-70/K-1/K-3II/K-3/K-S2/K-S1/K-50/K-30/K-5 II/K-5IIs/K-5/K-01/K-7/K-r/K-x/K-m/K20D/K200D/K10D FW Ver.1.30/K100D Super. If attached to other cameras, focusing is performed using the manual focus.

*If a C-PL filter or other thicker filter is attached, vignetting can occur at the edges of the image. General filters or thin C-PL filters can be used without any problems.

Type Normal Zoom
Focal length (Equivalent to 35mm format) 17-70mm(26-107mm)
Maximum aperture F4
Minimum aperture F22
Angle of View 79°-23°
Lens construction 17 elements / 12 groups
No. of diaphragm blades 7
Closest focusing distance 0.28m
Maximum reproduction ratio 0.31x
Filter size 67mm
Diameter x length 75 x 93.5 mm
Weight 485g

Compatible converters (Click here for details)

A1.4X-S A2X-S

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