Irix 45mm f/1.4 Dragonfly lens for Pentax K-mount is now available

The new Irix 45mm f/1.4 Dragonfly lens for Pentax K-mount is now available for purchase at the official Irix USA website (later the lens will be also listed at Adorama, Amazon, and B&H). Here are the details on the  latest Irix lens:

• Beautiful Bokeh
• Fast Maximum Aperture of f/1.4
• Fixed external dimensions when focusing
• Weather-sealed construction
• Aperture control from the camera
• Focus confirmation on camera
• Compatible with PASM semi-automatic modes
• Full recording of exposure parameters in EXIF
• 50-degree field of view
• “Focus Lock” function
• 140-degree focus ring rotation angle
• Reinforced internal construction
• 77mm front thread
• Mounts: Nikon F, Canon EF, Pentax K

Optical Properties

Are you looking for a new classic focal length lens? Defy all standards! The 45mm focal length will let you capture the world more creatively than a standard 35mm and 50mm focal length. At the same time, the fast aperture of f/1.4 will allow you to effectively separate the subject from the background. The Irix 45mm f/1.4 lens was designed to produce an extremely sharp image at only f/1.4. Thanks to the 9-rounded aperture blades, the areas outside the depth of field remain smooth; the bokeh is clean and beautiful.

Dragonfly version


• Reinforced internal construction based on metal elements
• Scratch-resistant finish
• Anti-slip focusing ring with a special finish for easy focusing
• Engraved markings filled with UV reactive paint
• Sealings to protect against dust and water
• Hardcase included

At Irix, we believe that a lens is not just a tool in the hands of a photographer. The overall impression of the photo creation process is also important to us. The lens has to be fun and easy to use! That is why the ergonomics and design of our products are so important to us.

The Dragonfly version is a combination of reinforced metal and composite elements. This combination has resulted in an extremely durable, compact structure, which thanks to numerous seals, remains resistant to adverse weather conditions.

Focus Ring

We know how much you liked the focus ring on the Irix 150mm f/2.8 Macro 1:1 lens, so we decided to use a similar one on the 45mm f/1.4 lens. After many tests, we have developed a ring material characterized by its high mechanical strength and resistance to harsh conditions. Its special texturing allows for reliable and precise focusing, and dedicated embossed dimples allow you to feel the position of the ring, making focusing even easier.

Focus Lock

Focus Lock allows you to lock the focus ring in a specific position. This is especially useful when we want to maintain a specific distance to the subject (zone-focusing), or when we want to maintain perfect focus on infinity during landscape photography.


Irix 45mm f/1.4
Maximum Coverage Size 43.3mm (35mm Full Frame)
Focal Length 45mm
Aperture F1.4
Angle of View 51.4⁰ (diagonally)
Focusing Manual
Focus Ring Throw 140º
Minimal Focusing Distance 0.4m
Aperture Range F1.4– F22
Aperture Control From camera
Number of diaphragm blades 9 rounded blades
Lens construction 11 elements arranged in 9 groups (1 ASP element)
Filter size 77mm
Available mounts Canon EF, Nikon F, Pentax K
Dimensions (width x length)*
(without accessories)
Canon EF 105 x 87 mm
Nikon F 103 x 87 mm
Pentax K 104 x 87 mm
Weight Canon EF 925g
Nikon F 905g
Pentax K 910g
Lens hood ILH-45
Additional Features Focus Lock
Weather-sealing In 4 key areas
Included accessories Hard case 1 pc
Lens Hood 1 pc
Front lens cap 1 pc
Rear lens cap 2 pc
Warranty card 1 pc
Owner’s manual 1 pc

Additional pictures:

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