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Standard 24-70mm zoom lens is designed
for Pentax K mount full-frame DSLRs/SLRs and is also compatible with
APS-C models where it will provide a 36-105mm equivalent focal
length range.
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Fast f/2.8 constant maximum aperture
offers consistent performance throughout the zoom range, benefits
working in difficult lighting conditions, and offers greater control
over focus position for shallow depth of field applications.
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A 17 elements in 12 groups design
features three extra-low dispersion elements, three aspherical
elements, and one anomalous dispersion glass-molded aspherical
element. This combination helps to substantially reduce chromatic
aberrations and various distortions throughout the zoom range and
also offers enhanced sharpness, clarity, and edge-to-edge
illumination throughout the aperture range.
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An HD coating has been applied to lens
elements to minimize flare and ghosting for increased contrast and
color neutrality when working in harsh, backlit lighting conditions.
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A Supersonic Direct-drive Motor (SDM)
benefits autofocus operation with smooth, quiet, and accurate
performance to support both stills and video applications.
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A weather-resistant construction
incorporates five weather seals to protect against moisture for
working in inclement conditions.
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A rounded nine-blade diaphragm
contributes to a pleasing out-of-focus quality when working with
selective focus and shallow depth of field techniques.
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Quick-Shift Focus System lets you
manually control focus at any time, even when working in AF mode, by
simply rotating the focus ring.
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A zoom lock lever prevents the lens
from extending under its own weight when carrying
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