What do you do when you need a shot as big as the great outdoors from a camera that fits in a shirt pocket? Grab this lens and put it on the front of your Pentax Q. Fish-eye lenses have a unique look and are well-suited for artistic treatments of landscapes. Interesting forced perspective effects are another creative option.

Product Highlights:

  • Pentax Q-mount fixed f/5.6 fisheye lens with 35mm equivalent of 17.5mm
  • designed for Pentax Q-mount hybrid interchangeable-lens cameras
  • 160-degree angle of view with fish-eye distortion that increases toward the edge of the frame
  • well-suited for artistic treatments of landscapes and forced perspective effects
  • constructed of 6 elements in 5 groups
  • minimum focus distance: 3-1/2"
  • lens is 1-1/4" long, 1-5/8" in diameter
  • weight: 1.02 ounces
  • supplied accessories: front and rear lens caps
  • warranty: 1 year
  • Our 60-day money-back guarantee
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Hands-on research

What's in the box?

Download owner's manual

  • Pentax Q 03 Fish-eye lens with attached front and rear lens caps
  • Operating Manual
  • Pentax Worldwide Service Network
  • Notification of Change in Company Name
  • Serial number sheet

Features and Specs

Brand Compatibility Pentax
Image Stabilization No
Focal Length 3.2mm
Maximum Aperture F5.6
Weight 1.02
Parts Warranty 1 Year
Labor Warranty 1 Year

Product Research


Overview: The Pentax 03 Fish-Eye lens is a compact ultra-wide angle lens, designed for the Pentax Q-series digital hybrid cameras. It has a focal length of 3.2mm, which is equivalent to 17.5mm in the 35mm format. Its 160° angle of view and fish-eye distortion makes it ideal for creative photography and expansive landscape shots.

Lens Mount: The lens has a Pentax Q-mount, and can fit Pentax Q-series cameras.

Pan Focus Effect: The lens' pan focus effect is designed to capture all elements in the image frame in sharp focus.


  • Focal Length: 3.2mm
  • 35mm Equivalent: 17.5mm
  • Lens Construction: 6 elements in 5 groups
  • Mount Type: Pentax Q-mount
  • Aperture: F5.6
  • Maximum Magnification: 0.06x
  • Angle of View: 160°
  • Minimum Focus Distance: 3.5"
  • Lens Hood: not available
  • Filter Diameter: n/a
  • Dimensions:
    • Diameter: 1.597"
    • Length: 1.357" (1.786" w/caps)
    • Weight: 1.02 ounces

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