FIRIN
FíRIN 20mm F2 FE AF
Name’s Origin
Fírin is a variation of Fírinne, the Old Irish word for “truth”, which was coined during the Gaelic Revival in the late 19th Century. It means, “that which is real”. It signifies “being true to someone or something”. And it represents a promise from Tokina to photographers to help them capture the truth in their images with this revolutionary new lens.
With FíRIN, photographers can shoot with confidence, knowing that every image captured with their mirrorless cameras will be its own moment of truth.
Overview
FíRIN 20mm F2 FE AF is an autofocus version of the existing FíRIN 20mm F2 FE MF super wide angle lens for full-frame Sony E-mount. Being specially designed for Sony E-mount and adopting the same optical design as in MF model, FíRIN series now offers more options for end-users to choose according to the purpose and style of shooting.
Compact size
In terms of weight and size FíRIN 20mm F2 FE AF is designed to fit Sony E-mount camera. Being fast wide angle prime lens it performs great optical results that come from such a compact and lightweight construction. Feel the exquisite balance between lens and camera body when go out shooting with FíRIN 20mm F2 FE AF.
Optical performance
Being optimized for full size camera sensors in terms of size and resolving ability, the optical design adopts 2 aspherical elements and 3 lenses molded from Super-low Dispersion glass to significantly reduce any type of aberration including spherical aberration, distortion and chromatic aberration while assuring high resolution and stunning performance even at wide open aperture.
LENS CONSTRUCTION | MTF CHART |
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Functionality
Keeping along with the basic development concept of the previous model FíRIN 20mm F2 FE AF is made compatible to auto focus and other functions of the camera providing perfect functionality and usability for the photographer.
Ring-shaped ultrasonic autofocus motor
For AF drive system FíRIN 20mm F2 FE AF adopts quick responsive and silent ring-shaped ultrasonic motor. Coupled with GMR sensor AF system performs fast and accurate focusing.
Full compatibility to AF system
FíRIN 20mm F2 FE AF is fully compatible with Fast Hybrid AF system. At all AF mode settings including DMF, FíRIN 20mm F2 FE AF provides the same auto focus performance as with common E-mount AF lenses. Fine manual focus adjustment is also possible.
MF Assist function
Accurate focusing is supported by compatibility to MF Assist function, when fine focusing adjustment is operated by manual rotation of the focusing ring with the simultaneous interlocking with image enlarging function and bar distance display on the monitor.
Optical correction
Due to the data transmittance ability via electric contacts the camera obtains necessary data from the lens chip to correct shading, distortion and lateral chromatic aberrations. Optical corrections can be done by the camera as well.
Image Stabilization
By transmitting focal length data FíRIN 20mm F2 FE AF is able to get maximum use of In-Body Image Stabilization of the camera.
Aperture fully controlled by camera
Camera system takes care of the lens aperture providing full compatibility to all shooting modes.
Note: FíRIN series lenses are developed and manufactured in accordance with Sony-licensed specification.
FíRIN 20mm F2 FE MF
Name’s Origin
Fírin is a variation of Fírinne, the Old Irish word for “truth,” which was coined during the Gaelic Revival in the late 19th Century. It means, “that which is real”. It signifies “being true to someone or something”. And it represents a promise from Tokina to photographers to help them capture the truth in their images with this revolutionary new lens.
With FíRIN, photographers can shoot with confidence, knowing that every image captured with their mirrorless cameras will be its own moment of truth.
Main Features
- A Full-Frame, super wideangle lens that performs with perfect compatibility in terms of design and form factor when attached to a Sony α7 series body.
- The optical system adopts aspherical lens elements in the best positions in the optical design to reduce any type of aberration to a minimum in addition to 3 lenses molded from Super-low Dispersion glass that significantly reduces lateral chromatic aberrations.
- The FíRIN lens has the ability to transmit aperture, distance and optical information to the camera making this lens fully suitable for the Sony α7 series camera’s MF assist function, in-cameras 5 axis image stabilizations and in viewfinder electronic distance scale.
- A design devoted to manual shooting and cinema enthusiast that includes a wide manual focus ring, aperture ring and depth of field index bar.
- De-Click Aperture function suitable for cinema/video shooting.
- Luxurious use of high-precision Japanese-made metal parts and mechanisms.
Perfect Match
The FíRIN 20mm f/2 lens is a compact form-factor super wide angle manual prime lens compatible with full-frame E-mount Sony mirrorless cameras.
Optics
By adopting two all-glass precision molded aspherical elements and 3 Super-low Dispersion (SD) glass lens elements we 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 f/2 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.
Communication
Being a fully manual lens with a large focus ring, aperture ring and depth of field index bar, the ability to simultaneously transfer distance and aperture status to the camera give you full advantage to use the latest features of the α7 series such as 5-axis image stabilization, MF assist and the electronic distance scale.
You can get the advantage of both strengths: excellent optical properties of the lens and outstanding camera image processing power.
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 prefocus 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 f/2 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 declicks the aperture mechanism making it suitable for cinema/video use.
Note: FíRIN series lenses are developed and manufactured in accordance with Sony-licensed specification.