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Pentax smc DA 17-70mm f/4 AL [IF] SDM

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Zoom lens

A zoom lens by Pentax for APS-C cameras, 17-70mm f/4.

MakerPentax
Focal length17-70mm (zoom)
Maximum aperturef/4
Made forAPS-C sensors
MountsPentax K
Stabilisedno
Autofocusyes

What it frames like

142435508513520040080026-105mm equiv.17-70mm on APS-C
Its full-frame-equivalent focal length on the sensor it was made for.
APS-C 26mm · 70°
How wide 17mm sees at its wide end on each sensor it covers.
f/4
f/4 wide open, to scale against f/1.4.
  • On APS-C (Pentax K): like 26-105mm on full frame; f/4 gives about the depth of field of f/6 there.
  • On the larger-sensor bodies of Pentax K: it works with the camera in a APS-C crop mode, at fewer megapixels.

Cameras it fits

Questions people ask

Compare with

See what it frames: its view on the Pentax K-3 Mark III Monochrome at any distance, and its depth of field, drawn to scale.