Pentax SMCP-DA* 55mm f/1.4 SDM Auto Focus Lens for use with Pentax Digital SLR Cameras

The Pentax 55mm f/1.4 DA* SDM Autofocus Lens is a compact and bright short-telephoto lens of the highest order, made exclusively for Pentax digital SLR cameras.  In a stocky housing ready for harsh conditions, you'll get a bright f/1.4 aperture-worlds away from the experience you're used to with more common zooms-that opens up new creative doors to you as a photographer.

This lens was born to shoot between f/1.4 and f/2.8, and comes with a 9-bladed aperture diaphragm which shows up as perfectly round when you stay between f/1.4-2.8.  Shoot dramatic portraits with bright point light sources behind the subject, and you'll be dazzled with lovely diffuse, circular out-of-focus highlights that make everybody look better.  Beyond portraits, this lens works well any time you would use a moderate telephoto focal length.

The focusing system of this lens is SDM only; there is no screw on the rear of the lens barrel to have the AF driven by a body-based motor.  This allows the lens to move incredibly quick, driven by an internal motor and with the Quick-Shift system providing manual override capacity to you any time you want it with no buttons to switch; but you'll need a Pentax body which allows SDM autofocus (all current Pentax bodies support SDM, but the *IST series does not).

Note! Does NOT provide autofocus upon non-SDM-enabled Pentax cameras.

Features

• Brilliantly-sharp portrait lens which gathers plenty of light
• Completely-rounded aperture diaphragm from f/1.4-2.8 for beautiful out-of-focus highlights
• Speedy SDM autofocus motor provides fast, silent response with Quick-Shift full-time manual override
• Pentax's unique SP water and dirt-repelling coating on both external surfaces Pentax's "Aero Bright" internal lens yields high transmissivity and reduced flare
• Dust and moisture-resistant housing
• Essentially equivalent to an 85mm f/1.4 lens upon 35mm SLR cameras 

Specifications

Construction	8 Groups/ 9 Elements
Angle of view	28.6 degrees (w/PENTAX DSLR)
F stop range	f/1.4-22
Closest Focusing Distance	0.45m (1.5 ft.)
Maximum Magnification	0.173X
Filter Size	58mm
Dimensions (Length x Diameter)	2.6" x 2.8" (66.0 x 70.5mm)
Weight	13.2 oz. (375g)
Notes	Quick-shift focus, SP (Super Protect) coating, Rounded aperture (F1.4-2.8), Dustproof and weather resistant, SDM supersonic autofocus motor, SDM-only autofocus (manual focus on non-SDM bodies)

Includes

• Pentax Telephoto 55mm f/1.4 DA* SDM Autofocus Lens for Digital SLR
  
• PH-RBH Lens Hood for SMC DA* 55mm f/1.4 SDM Lens
• 58mm Snap-On Lens Cap
• Rear Lens Cap (B) for Bayonet Mount Lenses
• Lens Case S90-100 (Soft)

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