Pentax SMC DA* 55mm f/1.4 SDM Prime Standard Lens

High Performance Standard Lens
Featuring a Large Maximum Aperture

With super-low-dispersion optical elements, extra-low dispersion (ED) optical elements and PENTAX original lens coatings, the PENTAX DA* 55mm F1.4 SDM lens assures outstanding image quality with clear, high-contrast images, even at image field edges.

It features water and dust resistant sealing for reliable operation in inclement conditions, and the PENTAX Quick-Shift Focus system to allow instant auto-to-manual focus switching. Objective lens surface is treated with PENTAX original Super Protect (SP) coating. This special fluorine compound is applied through a vapor deposition process to create a surface that effectively repels dust, water and grease.

The combination of special lens coatings, ideal curvature and best positioning of optical elements assures optimized digitalimaging characteristics, while effectively minimizing flare/ghosting. It also features a new Aero Bright coating for maximum light transmission, and rounded diaphragm blades to create a more circular aperture for smooth, beautiful bokeh at large apertures.

Features

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.

• 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

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Specifications

Overview
Lens style	Prime lens
Max Format Size	APS-C / DX
Lens focal length	55 mm
Stabilization type	No (via camera body)
Camera mount	Pentax KAF3
Angle of view	28.6°
Aperture
Largest aperture opening	F1.4
Smallest aperture opening	F22.0
Includes aperture ring	No
Total diaphragm blades	9
Aperture annotations	rounded blades
Optics
Total Elements	9
Number of Groups	8
Focusing
Minimum focus distance	0.45 m (17.72")
Maximum magnification ratio	0.17 x
Autofocus type	Yes
Full time manual focus	Yes
Focusing method	Internal
Lens distance scale	Yes
Depth of field scale	Yes
Physical
Overall weight	375 g (0.83 lb)
Lens diameter	70 mm (2.76")
Overall length	66 mm (2.60")
Sealing	Yes
Color	Black
Filter thread size	58 mm
Filter annotations	Does not rotate on focus
Lens hood included	Yes
Lens hood code	PH-RBH 58mm
Tripod collar included	No

Lens 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
• PentaxPH-RBH Lens Hood
• 1-Year Warranty
• 58mm Snap-On Lens Cap
• 1-Year Warranty
• Rear Lens Cap (B) for Bayonet Mount Lenses
• Lens Case S90-100 (Soft)

Accessories

Images