Pentax K-01 camera with 40mm lens &

Ideal zoom range for a standard lens
When mounted on the PENTAX *istDS, this new zoom lens offers an angle-of-view coverage equivalent to a 27.5mm-84mm lens in the 35mm format, effectively covering the most frequently used ranges from wide angle to moderate telephoto.

Compact dimensions with minimal aberrations
The aspherical optical elements incorporated in this new lens contribute not only to a reduction in size and weight, but also to effective compensation of unwanted aberrations.

Functional and fashionable design
The aperture ring has been eliminated from this lens to simplify camera operations and improve its appearance, while aperture-setting operation is performed from the camera body.

Quick-Shift Focus System
Once the subject is captured in focus by the camera's autofocus system, this PENTAX-original system allows the photographer to shift the focusing mode instantly to manual without any switching operations.