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Pentax SMC DA* 55mm F1.4 SDM Lens [21790]

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  • Pentax SMC DA* 55mm F1.4 SDM Lens [21790] Pentax SMC DA* 55mm F1.4 SDM Lens [21790]
  • Pentax SMC DA* 55mm F1.4 SDM Lens Extended Pentax SMC DA* 55mm F1.4 SDM Lens Extended
  • Pentax SMC DA* 55mm F1.4 SDM Lens [21790] Pentax SMC DA* 55mm F1.4 SDM Lens [21790]

Quick Overview

  • 2 years Australian Warranty

  • Supersonic Direct-drive

  • Weather resistant

  • Quick-shift focus

RRP: $1,159.00

Special Price: $989.00

SAVE: $170.00 (14.7%)

Availability: In stock

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The Pentax SMC DA* 55mm F1.4 SDM Autofocus Lens [21790] 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.

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 82.5mm f/1.4 lens upon 35mm SLR cameras


Standard in focal length, but excellent in quality, the smc Pentax DA Star 55mm for Pentax digital SLR cameras is incredibly fast and offers outstanding depth of field control. And with its weather-resistant construction, it?s versatile enough for all types of shooting conditions. 

* Standard
* Portrait, still life, low light photography, weddings

Special Features

f/1.4 aperture

Circular diaphram

SDM technology

Weather sealed

"Quick Shift" focusing

Only compattible with SDM enabled cameras


Focal Length 55mm
Comparable 35mm Equivalent on APS-C Format Focal Length: 82.5 mm
Aperture Maximum: f/1.4
Minimum: f/22
Camera Mount Type Pentax K
Format Compatibility Pentax Digital (APS-C)
Angle of View 28.6°
Minimum Focus Distance 1.48' (45 cm)
Magnification 0.17x
Maximum Reproduction Ratio 1:6
Elements/Groups 9/8
Diaphragm Blades 9
Image Stabilization No
Autofocus Yes
Tripod Collar No
Filter Thread 58 mm
Dimensions (DxL) Approx. 2.8 x 2.6" (7.11 x 6.60 cm)
Weight 13.23 oz (375 g)
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