Irix 21mm f/1.4 Dragonfly Lens for Pentax K IL-21DF-PX

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