Specifications#
- Brand
- Tokina
- Model
- E 20mm f/2
- Lens type
- Wide-angle prime
- Focal length
- 20 mm
- Maximum aperture
- f/2
- Image circle
- APS-C (23.5×15.6 mm)
- Mount(s)
- Sony E-mount
- Projection
- Rectilinear
- Lensfun correction profile
- Yes — distortion/vignetting/TCA
Equivalent focal length on different cameras#
Field of view and depth-of-field equivalence when this lens is used on bodies with different sensor sizes (natively or via an adapter).
| Camera format | At 20 mm | Equiv. aperture (DoF) |
|---|---|---|
| APS-C | 30 mm · 70° | f/3.0 |
| APS-C (Canon) | 32 mm · 68° | f/3.2 |
| Micro Four Thirds | 40 mm · 57° | f/4.0 |
Depth of field & background blur#
Computed on its native APS-C format (CoC 20 µm). “Blur @2 m” is the size of an out-of-focus point at infinity, as a percentage of frame width, with the subject at 2 m — a simple bokeh index. Full table: 20 mm f/2 on aps-c.
| Focal | Aperture | at 1 m | at 2 m | at 5 m | at 10 m | Hyperfocal | Blur @2 m |
|---|---|---|---|---|---|---|---|
| 20 mm | f/2 | 19.3 cm | 80.5 cm | 6.38 m | 410 m | 10.2 m | 0.4% |
| 20 mm | f/4 | 39.8 cm | 1.82 m | 190 m | ∞ | 5.13 m | 0.2% |
| 20 mm | f/8 | 89.9 cm | 7.74 m | ∞ | ∞ | 2.58 m | 0.1% |
Handheld & night-sky limits#
NPF assumes typical 20–24 MP sensors (≈6 µm pixels on full frame, ≈3.9 µm on APS-C, ≈3.3 µm on Micro Four Thirds).
| Body | Min. handheld shutter (longest focal) | 500 rule at 20 mm | NPF at 20 mm, f/2 |
|---|---|---|---|
| APS-C | 1/30 s | 17 s | 9 s |
| APS-C (Canon) | 1/30 s | 16 s | 9 s |
| Micro Four Thirds | 1/40 s | 12 s | 8 s |
Compatible cameras#
Bodies in our database with a native Sony E-mount mount. Full-frame bodies switch to an APS-C crop with this lens.
- Sony α7R VI crop mode
- Sony α7 V crop mode
- Sony ZV-E10 II 2024
- Sony α1 II crop mode
- Sony α9 III crop mode
- Sony α6700 2023
- Sony ZV-E1 crop mode
- Sony α7C II crop mode
- Sony α7CR crop mode
- Sony α7R V crop mode
- Sony FX30 2022
- Sony FX3 crop mode
- Sony ZV-E10 2021
- Sony α1 crop mode
- Sony α7 IV crop mode
- Sony α7S III crop mode
- Sony FX6 crop mode
- Sony α7R IV crop mode
- Sony α6400 2019
- Sony α6600 2019
- Sony α6100 2019
- Sony α7 III crop mode
- Sony α6300 2016
- Sony α6500 2016
- Sony α7R II crop mode
- Sony α7S II crop mode
- Sony α5000 2014
- Sony α5100 2014
- Sony α6000 2014
- Sony NEX-3N 2013
- Sony NEX-5T 2013
- Sony α3000 2013
- Sony α7 crop mode
- Sony NEX-F3 2012
- Sony NEX-7 2011
- Sony NEX-C3 2011
- Sony Alpha NEX-5N 2011
- Sony NEX-5 2010
- Sony Alpha NEX-3 2010
- Sony α7R III crop mode
Adapt it to other systems#
Similar lenses#
- Sony E 20mm f/2.8 f/2.8
- Zeiss Loxia 21mm f/2.8 f/2.8
- Viltrox 23mm F1.4 E f/1.4
- Samyang 24mm f/1.4 ED AS IF UMC f/1.4
- Samyang AF 24mm f/1.8 f/1.8
- Samyang AF 24mm f/2.8 f/2.8
- Samyang T-S 24mm f/3.5 ED AS UMC f/3.5
- Sigma 24mm F2 DG DN | Contemporary 021 f/2
- Sigma 24mm F3.5 DG DN | Contemporary 021 f/3.5
- Sigma 24mm f/1.4 DG HSM | A f/1.4
- Sony FE 24mm f/1.4 GM f/1.4
- Sony FE 24mm f/2.8 G f/2.8
Frequently asked questions#
Is the Tokina E 20mm f/2 full frame?
No — it is designed for APS-C sensors. On a full-frame body it vignettes or triggers crop mode.
What is the Tokina E 20mm f/2 equivalent to on APS-C?
Its focal length is already the real value for APS-C: 20 mm frames like 31 mm on full frame.
What is the Tokina E 20mm f/2 good for?
As a wide-angle prime it suits street, environmental portraits, landscapes and astro.
Sources & licences#
- Lensfun lens database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources