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Pentax 20-35mm F/4 SMC FA AL K Mount Autofocus Lens {58}

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* Item pictured for illustrative purposes only, actual item not pictured.

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Pentax 20-35mm F/4 SMC FA AL K Mount Autofocus Lens {58} Description


The SMC Pentax-FA 20-35mm f/4 AL is a wide-angle  zoom lens for 35 mm Pentax K  Autofocus SLR cameras.

The smc P-FA Zoom 20mm-35mm f/4 AL compact zoom lens covers angles of view from an ultra-wide 94° at the 20mm setting to a wide 63° at 35mm. It incorporates two aspherical lens elements to reduce distortion and produce sharp, crisp image reproduction. Like all Pentax-FA lenses, it is treated with Pentax's acclaimed smc coating for maximum light transmission, sharp definition, and high contrast, while minimizing flare and ghost imaging. Extremely flexible, this lens is ideal for shooting panoramic landscapes and tall buildings.

KEH Specifications

  • Focal Length: 20-35mm
  • Aperture Maximum: f/4
  • Aperture Minimum: f/22
  • Camera Mount Type: Pentax K mount
  • Format Compatibility: 35mm, APS-C
  • Minimum Focus Distance: 13 inches
  • Elements/Groups: 10/8
  • Diaphragm Blades: 8
  • Tripod Collar: No
  • Filter Thread: 58mm
  • Dimensions: 2.8 inches
  • Weight: 8.6 oz (245g)




Pentax 35mm SLR Cameras

Application/Usage Camera

Physical Characteristics

Lens Mount Pentax KAF2 (SMC-FA)

General information

Product Series P-FA
Product Line smc
Manufacturer Part Number 27960
Manufacture GTIN 0027075045569
Brand Name Pentax

Technical Information

Lens Construction 10 Elements in 8 Groups
Zoom Min Focal Len 35 mm
Minimum Focal Length 20 mm
Maximum Aperture Wide 4
Filter Attachment Diameter 58 mm
Zoom Min Focal Length 20.0000
Zoom Max focal length 35.0000

Customer Reviews