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Pentax SMCP-DA 17-70mm f/4 AL (IF) SDM Autofocus Lens for Digital SLR

BH #PE17704DA • MFR #21740
Pentax SMCP-DA 17-70mm f/4 AL (IF) SDM Autofocus Lens for Digital SLR
Key Features
  • Zoom Super Wide-Telephoto
The Pentax SMCP-DA 17-70mm f/4 AL (IF) SDM Lens is a high-quality fixed-aperture f/4 lens designed exclusively for use with digital SLR cameras. This lens brings together advanced optical technologies, including aspherical elements, special optical-glass elements, and original lens coatings. It offers a versatile wide to medium-telephoto zoom range, and allows for a wider range of shooting applications over the more standard zoom lenses.

This lens comes equipped with the SDM focusing system, which assures smoother and quieter auto-focusing operation by using a built-in supersonic motor. Since this lens only has electrical contacts to communicate between the lens and the camera, autofocusing will only be possible with DSLR cameras that support SDM (e.g. K10D, K20D, K100D Super, K200D, and later models). When mounted on older Pentax digital SLR camera bodies, only manual focusing will be possible.

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Is this lens good for video?

Is this lens good for video?
Asked by: Elisha
While this is can be used for video, it is best to manually focus it to avoid any unwanted sound from the autofocus motor in your playback.
Answered by: Kirk
Date published: 2020-11-10


Can the AF motor be repaired or replaced? Mine stopped working.
Asked by: Wayne B.
Yes, but it would be with a Pentax repair shop. You should contact Pentax directly to get started.
Answered by: Jacob C.
Date published: 2018-08-27


Will this lens work on my K-r?
Asked by: Diane F.
Yes, the Pentax SMCP-DA 17-70mm f/4 AL (IF) SDM Autofocus Lens for Digital SLR would be fully compatible for use on the Pentax K-r DSLR camera.
Answered by: Manzell L.
Date published: 2018-08-27


Is the autofocus function on this lens operable with the Pentax k-X?
Asked by: Michael
As a follow-up to my previous response to your question, Pentax customer Service can best answer your question. With respect to the auto focus issue I encountered, my lens was found to have a problem auto focusing at certain levels of contrast, and so it is being replaced. Except for that problem, it worked fine.
Answered by: DAVID H.
Date published: 2018-08-27


Will this lens work on the K-3?
Asked by: Anonymous
The SMCP-DA 17-70mm f/4 lens is fully compatible with the K-3, yes.
Answered by: Christina S.
Date published: 2018-08-27


Can this be used with the Pentax K-50?
Asked by: Anonymous
Yes, this lens would be compatible with the Pentax K-50.
Answered by: Kirk R.
Date published: 2018-08-27
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