IRIX 21mm f/1.4 Dragonfly Lens for Pentax K

After meticulous design and engineering, the Irix 21mm f/1.4 Dragonfly emerges as a superior wide-angle lens, ideal for the discerning photographer specializing in landscape, astro, and night photography. This lens boasts full compatibility with both full-frame and APS-C Pentax K cameras, ensuring versatility across different camera bodies.

Crafted for excellence, the optical structure of the Irix 21mm f/1.4 lens incorporates an advanced arrangement of 15 elements in 11 groups, including 4 ultra-low dispersion glass elements, 4 high refractive index elements, and 2 aspherical elements. This sophisticated design is tailored to complement the latest high-resolution, full-frame 35mm sensors, delivering images of remarkable sharpness and clarity.

Distortion is expertly minimized, with levels not exceeding 2%, rendering it virtually undetectable. This precision makes the lens particularly effective for architectural photography, where straight lines and accurate perspectives are paramount.

Astrophotography enthusiasts will find the lens's large f/1.4 aperture and well-managed coma aberration to be indispensable features, allowing for stunning captures of the night sky. The lens's 11-blade aperture with rounded edges contributes to a smooth and aesthetically pleasing bokeh, enhancing the artistic quality of out-of-focus backgrounds.

Prepared for the unpredictable, the Irix 21mm f/1.4 Dragonfly is weather-sealed, offering peace of mind to professionals who operate in challenging conditions. The lens is fortified with special seals to block out moisture and debris, while a bayonet mount gasket provides additional protection for the camera's mirror chamber.

The dedicated lens hood serves a dual purpose: reducing lens flare and safeguarding the front element. When not in use, the lens can be securely stored in the provided hard case, designed for maximum protection.

The Dragonfly finish is a testament to the lens's robust construction, featuring metal elements for enhanced durability, a scratch-resistant exterior, an anti-slip focus ring with a tactile finish for precise adjustments, and UV reactive paint that illuminates the engraved markings.

Intelligent design extends to the lens's semi-automatic modes, allowing for direct control of the aperture from the camera. This integration supports popular PASM modes and records data in EXIF format. The built-in electronics also facilitate a focus confirmation system, signaling when focus is accurately achieved, simplifying the manual focusing process.

The Focus Lock Ring is a critical feature for photographers who require consistent focus, enabling the focus ring to be fixed at a desired setting - ideal for zone focusing or maintaining infinity focus in landscape or night photography.

The ergonomic focus ring, a signature element of Irix lenses, is replicated in the 21mm f/1.4 model. The ring's design, combining a textured surface with high-quality rubber, ensures reliable and precise manual focusing. The distinctive embossing allows for intuitive operation, making manual focus more accessible than ever.

In summary, the Irix 21mm f/1.4 Dragonfly lens is a masterful combination of precision optics, rugged construction, and thoughtful design, tailored for photographers who demand the best in wide-angle performance.