Tokina FiRIN 20mm f2 FE MF Lens for Sony E

A full-frame, super wide-angle lens designed for compatibility with the Sony a7 series camera body and multi-media work. The optical system adopts aspherical lens elements in the best positions to reduce aberration to a minimum, with 3 lenses molded from Super-low Dispersion glass that specifically reduces lateral chromatic aberrations. The Firin lens transmits aperture, distance, and optical information to the Sony A7 series camera's MF assist function, its in-camera 5-axis image stabilizations, and in viewfinder electronic distance scale.

Key Features: Tokina 20mm f2 Firin Lens - Sony E-Mount

Optics
By adopting two all-glass precision molded aspherical elements and 3 Super-low Dispersion (SD) glass lens elements Tokina succeeded in greatly reducing aberrations yielding images higher resolution and contrast. This optical design demonstrates Tokina's decades of experience and traditions of excellence as an optics manufacturer merged with the application of new technologies.

Coatings
Anti-reflective coatings play an important role in the optical performance of the lens. In addition to the fact that all glass elements of the FíRIN 20mm F2 are multi-coated, considerable work has been done with the rear convex surfaces of the large G1 element. This element was very difficult to coat due to its complex shape. The Coatings are even on the contacting surfaces of the element combinations G6- G7 and G10-G11. All these small measures add up to reduce reflections and flare to an absolute minimum while increasing sharpness and contrast.

Exterior & Usability
Carefully crafted high quality finishes and precisely engineered and manufactured metal parts give this lens the feel and performance of a premium optic.

Attention to detail, finely machined and finished component, superb optical design and balanced ergonomics yield a lens that is as easy to use and good looking as the images it creates. Manual focus allows pre-focus technique snapshots to be taken with easy using the advantage of the deep depth of field of this super-wide angle lens or open up to F2 to enjoy beautiful bokeh.

For Cinematography
FíRIN is not only for photography. With a press of the De-Click button on the aperture ring the lens de-clicks the aperture mechanism, making it suitable for cinema/video use.

Specifications

• Focal Length: 20mm
• Aperture (max-min): f/2 - f22
• Angle of view: 92.66 degrees
• Macro ratio: 1:10.29
• Min focus distance: 0.28m (0.9')
• Lens length: 81.5mm (3.2")
• Weight: 490g
• Aperture blades: 9