Camera lens - Irix 15mm f/2.4 Firefly Pentax
Product reference: 14-7640172190036

Manual focus 15mm f/2.4 ultra-wide-angle lens for Pentax K-series mirrorless cameras. It provides a 110° diagonal angle of view, allows focusing from a distance of 0.25m, has a 15-element, 11-group construction, nine rounded aperture blades, focus lock, and is compatible with 95mm front-mount screw-on filters.

Camera lens - Irix 15mm f/2.4 Firefly Pentax

Product reference: 14-7640172190036

Manual focus 15mm f/2.4 ultra-wide-angle lens for Pentax K-series mirrorless cameras. It provides a 110° diagonal angle of view, allows focusing from a distance of 0.25m, has a 15-element, 11-group construction, nine rounded aperture blades, focus lock, and is compatible with 95mm front-mount screw-on filters.

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Irix 15mm f/2.4 Firefly Pentax


Manual focus 15mm f/2.4 ultra-wide angle lens for Pentax K DSLR cameras. It has a diagonal angle of view of 110° and a minimum focusing distance of 0.25 m. The lens consists of 15 elements in 11 groups, is equipped with 9 rounded aperture blades, a focus lock, and is compatible with 95 mm diameter screw-on front filters.


  • 15mm ultra-wide-angle prime lens for Pentax K DSLR cameras
  • Bright f/2.4 aperture for low-light photography, landscapes, architecture and starry skies
  • Advanced 15-element optical design with HR, ED and aspherical elements ensures sharp, low-distortion images
  • Manual focus with focus lock, infinity click, hyperfocal scale and focus confirmation

Product information

Product type Ultra wide angle rectilinear camera lens
Brand Irix
Model 15mm f/2.4 Firefly Pentax
Connection Pentax K
Format 35mm full frame
Focus type Manual focus with focus confirmation

Optical specifications

Aperture range f/2.4-f/22
Aperture control With a camera
Optical design 15 elements in 11 groups
Special elements 3 high refractive index (HR), 2 extra-low dispersion (ED) and 2 aspherical elements
Coating Neutrino coating
Diaphragm plates 9 rounded plates

Physical specifications

Dimensions 114 × 100 mm
Weight 608 grams
Housing material Lightweight plastic
Front filter thread 95 × 1.0mm
Rear filter holder 30 × 30 mm gelatin filter slot

Additional features

Focusing functions Focus lock, infinity click and hyperfocal scale
Included accessories Lens caps, petal lens hood, soft lens case, storage box and instructions

Height150mm
Length200mm
Weight800g
Width150mm
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