Tokina FiRIN 20mm F/2.0 FE MF
The Tokina Firin 20mm f/2.0 FE MF is a full-frame wide-angle manual focus lens for the Sony E-mount, announced by Tokina on September 8, 2016. It is the first in a new line of Tokina lenses optimized for Sony E-mount, and currently the only Tokina lens offered for Sony full-frame cameras.[1]
| Maker | Tokina |
|---|---|
| Lens mount(s) | Sony E-mount |
| Technical data | |
| Type | Prime |
| Focal length | 20mm |
| Image format | 35mm full-frame |
| Aperture (max/min) | f/2.0 - 22.0 |
| Close focus distance | 0.28 metres (0.92 ft) |
| Max. magnification | 0.10x |
| Diaphragm blades | 9 |
| Construction | 13 elements in 11 groups |
| Features | |
| Manual focus override |  |
| Weather-sealing |  |
| Lens-based stabilization | |
| Aperture ring | |
| Unique features | Aperture ring can be de-clicked |
| Application | Landscape, Street, Low-Light |
| Physical | |
| Max. length | 69 millimetres (2.7 in) |
| Diameter | 62 millimetres (2.4 in) |
| Weight | 490 grams (1.08 lb) |
| Filter diameter | 62mm |
| Accessories | |
| Lens hood | None |
| History | |
| Introduction | 2017 |
| Retail info | |
| MSRP | $799 USD |
Though designed for Sony's full frame E-mount cameras, the lens can be used on Sony's APS-C E-mount camera bodies, with an equivalent full-frame field-of-view of 30mm.
Build quality
The lens features a solid aluminum body with a detachable cinema-style lens hood. The lens showcases a minimalist black exterior with an aperture de-click ring, aperture ring, and focus ring. Despite being a manual focus lens, the lens transmits full Exif data to the camera body.
Image quality
The lens is very sharp from its maximum aperture of f/2, with only a slight fall-off in acuity toward the edges of the frame. Distortion and chromatic aberration are all well controlled. However, the lens suffers from mild vignetting.
The lens also excels at low-light photography given its fast maximum aperture of f/2.0 and exceptional coma control. In addition, having a wide-angle field-of view allows for longer exposures to be taken of stars without the effect of star trails affecting the resultant image.