IRIX 21mm f/1.4 Dragonfly Lens for Pentax

Irix 21mm f/1.4 is another series of photographic lenses originating from the Cine line, so designed for a much more professional and demanding users from the cinema market. Both the photographic and film versions of this lens have exactly the same optical structure. The main differences concern the outer casing and the available mounts.

The optical construction of the Irix 21mm f / 1.4 lens is based on 4 ultra-low dispersion glass elements, 4 high refractive and 2 aspherical elements. There are a total of 15 elements in 11 optical blocks. The lens is designed to work with the latest generation, full-frame 35mm sensors, i.e., with high resolution. A lot of emphasis was placed on limiting the distortion to the necessary minimum, it does not exceed 2%, so in practice it’s imperceptible. This allows you to successfully use this lens for all kinds of architectural photos. On the other hand, the combination of a very large relative aperture - f/1.4 with a well-controlled coma makes it an ideal tool for astrophotography. It’s also worth emphasizing the use of a new, 11-blade design of the aperture with rounded edges, which ensures a pleasant and very artistic bokeh of the background. It works in the range from f/1.4 to f/16.

Irix optics are appreciated by professionals who want to be able to work regardless of weather conditions. That is why, for our most demanding customers, the lens is equipped with special seals that prevent the ingress of moisture and dirt into its interior. A special bayonet mount gasket also protects the mirror chamber of the camera. A dedicated lens hood primarily reduces unwanted light reflections, but also acts as a protection for the front lens. When the lens is not in use, it can be safely stored in a dedicated hard case.

The Irix 21mm f/1.4 lens has electronic controls that allow you to control the aperture directly from the camera, making the popular semi-automatic (PASM) modes and EXIF data recording available. This facilitates and speeds up the work, also by allowing the use of correction profiles in the post-production process. The use of electronics in the lens also allows the lens to be equipped with a focus confirmation system - the camera will inform you about the correct focus (in the form of an icon in the viewfinder or a sound) every time you set the focus correctly.

Focus Ring - The unique focus ring with a characteristic thickening has become a kind of hallmark of Irix 150mm, 45mm or 30mm lenses. Our users appreciate the convenience of this solution. The new Irix 21mm also features the same type of focus ring. The ring itself is a combination of a properly selected texture with good quality rubber material. Thanks to this solution, you gain reliable and precise focusing. A specially designed embossing allows you to feel the position of the ring. Those solutions make working with manual focus much easier than you might expect.

Key Features

• Fast aperture f/1.4
• Ultra-wide-angle focal length with a 89.7 ° field of view
• Unrivaled optical quality
• Distortion below 2%
• Internal focusing
• Sealed design
• Aperture control via camera
• In camera focus confirmation
• Compatible with PASM semi-automatic modes
• Full EXIF data
• “Focus Lock” function
• 140-degree rotation angle of the focus ring
• Reinforced internal structure
• Mounts: Nikon F, Canon EF, Pentax K

Technical Specifications

Image format
full frame (43.3 mm)
Focal length
21mm
Aperture range (F)
f1.4~f16
The number of diaphragm blades
11 (rounded)
Minimum focus distance
0.30m (11.81″)
Focusing ring
Ring rotation angle
140 Degree
Distance scale
Metric and Imperial
Viewing angle
Full frame
89.7 Degree
Seals
3
Markings
Laser engraved, reacting to UV light
Dimensions
Canon EF
101 x 95 mm
Nikon F
99 x 95 mm
Pentax K
103 x 95 mm
Weight
Canon EF
830g
Nikon F
816g
Pentax K
816g
Accessories included
Lens hood
1
Front lens cap
1
Rear lens cap
1