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Product Highlights
  • f/1.4 - f/22 Aperture Range
  • 9/8 (Elements/Groups)
  • APS-C Format
  • SDM Supersonic Drive Motor
  • Weather Resistant
  • Pentax K Mount
Pentax smc DA 55mm f/1.4 SDM Lens Pentax smc DA 55mm f/1.4 SDM Lens
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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.

Key Features

  • The smc PENTAX DA Star 55mm F1.4 SDM is a prime standard lens that is ideal for portrait, still-life, or low light photography.
  • Its fast F1.4 aperture offers outstanding depth of field control, and its rounded diaphragm blades create a more circular aperture for smooth, beautiful bokeh at large aperture settings.
  • Adding the PENTAX Aero Bright coating on internal lens elements offers ultra high refraction index for improved light transmission with minimal ghosting and flaring.
  • The tightly sealed, weather-resistant and dust-resistant construction enhances durability for use in both rainy and dusty conditions, making the DA Star 55mm F1.4 SDM lens a perfect companion for the weather-resistant PENTAX DSLR bodies.
  • The PENTAX-original Quick-Shift Focus System allows instant switching from autofocus to manual focus operation.
  • The PENTAX-original SP (Super Protect) coating repels dust, water and grease to keep your lens clean and your image quality at its peak.
  • The SDM focus system incorporated in this lens results in a smoother, quieter autofocusing operation using a built-in supersonic motor.
  • The focal length is equivalent to 84.5mm in the 35mm format.
  • Developed specifically for PENTAX digital SLR cameras.

What's Included

  • smc PENTAX DA Star 55mm F1.4 SDM Lens
  • Lens Hood - PH-RBH 58mm
  • Lens Cap - O-LC58 58mm
  • Rear Lens Cap
  • Lens Soft Case - S90-100


Product Specifications


Detailed Specifications
Lens Mount PENTAX KAF3
Angle of View 28.6 degrees
Aperture Control Automatic
Minimum Aperture F22
Minimum Focusing Distance 17.76 inches (0.45m)
Maximum Magnification 0.173X
Weight 13.2 oz. (375g)
Objective Cap O-LC58
Les Aperture Ring N/A
Diaphragm Control Fully Automatic
Lens Construction 9 elements in 8 groups
Aperture F1.4
Number of Diaphragm Blades 9 (rounded)
Metering System TTL open-aperture metering
Filter Diameter 58mm
Dimensions 2.8 x 2.6" (70.5 x 66.0mm)
Case S90-100
Hood PH-RBH 58mm
Tripod Adapter No
Focal Length 55mm (equiv. 82.5mm)
Notes Quick-shift focus, SP (Super Protect) coating, Rounded aperture (F1.4-2.8), Dust proof and weather resistant, SDM supersonic autofocus motor, SDM-only autofocus (manual focus on non-SDM bodies)

Questions & Answers

Pentax smc DA 55mm f/1.4 SDM Lens

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