Specifications#
- Brand
- Tokina
- Model
- AF 12-28mm f/4 AT-X Pro DX
- Lens type
- Standard zoom
- Focal length
- 12–28 mm
- Maximum aperture
- f/4
- Image circle
- APS-C (23.5×15.6 mm)
- 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 12 mm | At 18 mm | At 28 mm | Equiv. aperture (DoF) |
|---|---|---|---|---|
| APS-C | 18 mm · 99° | 27 mm · 76° | 42 mm · 53° | f/6.0 |
| APS-C (Canon) | 19 mm · 96° | 29 mm · 73° | 45 mm · 51° | f/6.4 |
| Micro Four Thirds | 24 mm · 84° | 36 mm · 62° | 56 mm · 42° | f/8.0 |
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: 14 mm f/4 on aps-c.
| Focal | Aperture | at 1 m | at 2 m | at 5 m | at 10 m | Hyperfocal | Blur @2 m |
|---|---|---|---|---|---|---|---|
| 12 mm | f/4 | 1.51 m | ∞ | ∞ | ∞ | 1.85 m | 0.1% |
| 12 mm | f/8 | ∞ | ∞ | ∞ | ∞ | 93.2 cm | 0.0% |
| 18 mm | f/4 | 50.2 cm | 2.48 m | ∞ | ∞ | 4.16 m | 0.2% |
| 18 mm | f/8 | 1.22 m | 45.6 m | ∞ | ∞ | 2.09 m | 0.1% |
| 28 mm | f/4 | 19.6 cm | 81.9 cm | 6.58 m | 2.0 km | 10.0 m | 0.4% |
| 28 mm | f/8 | 40.3 cm | 1.86 m | 643 m | ∞ | 5.04 m | 0.2% |
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 12 mm | NPF at 12 mm, f/4 |
|---|---|---|---|
| APS-C | 1/40 s | 28 s | 21 s |
| APS-C (Canon) | 1/50 s | 26 s | 21 s |
| Micro Four Thirds | 1/60 s | 21 s | 20 s |
Compatible cameras#
Bodies in our database with a native Canon EF and Nikon F mount. Full-frame bodies switch to an APS-C crop with this lens.
- Nikon D6 crop mode
- Nikon D780 crop mode
- Canon EOS-1D X Mark III crop mode
- Nikon D3500 2018
- Canon EOS 6D Mark II crop mode
- Nikon D7500 2017
- Nikon D850 crop mode
- Nikon D5600 2016
- Canon EOS 5D Mark IV crop mode
- Canon EOS-1D X Mark II crop mode
- Nikon D3400 2016
- Nikon D500 2016
- Nikon D5 crop mode
- Canon EOS 5DS crop mode
- Nikon D5500 2015
- Nikon D7200 2015
- Canon EOS 5DS R crop mode
- Nikon D4S crop mode
- Nikon D750 crop mode
- Nikon D810 crop mode
- Nikon D3300 2014
- Nikon D7100 2013
- Nikon D5300 2013
- Nikon D610 crop mode
- Nikon Df crop mode
- Blackmagic Design Pocket Cinema Camera crop mode
- Canon EOS 5D Mark III crop mode
- Canon EOS 6D crop mode
- Canon EOS-1D X crop mode
- Nikon D3200 2012
- Nikon D4 crop mode
- Nikon D5200 2012
- Nikon D600 crop mode
- Nikon D800 crop mode
- Canon EOS-1D C crop mode
- Nikon D5100 2011
- Nikon D7000 2010
- Nikon D3100 2010
- Canon EOS-1D Mark IV 2009
- Nikon D3000 2009
Adapt it to other systems#
Similar lenses#
- Nikon Nikkor AF-S 16-80mm f/2.8-4E DX ED VR f/2.8–4
- Nikon Nikkor AF-S 16-85mm f/3.5-5.6G DX ED VR f/3.5–5.6
- Nikon Nikkor AF-S 17-55mm f/2.8G DX IF-ED f/2.8
- Sigma 17-50mm f/2.8 EX DC OS HSM f/2.8
- Tamron AF 17-50mm f/2.8 XR Di-II LD (Model A16) f/2.8
- Tamron SP AF 17-50mm f/2.8 XR Di II LD Aspherical (IF) f/2.8
- Tamron SP AF 17-50mm f/2.8 XR Di II VC LD Aspherical (IF) f/2.8
- Nikon Nikkor AF-P 18-55mm f/3.5-5.6G DX VR f/3.5–5.6
- Nikon Nikkor AF-S 18-105mm f/3.5-5.6G DX ED VR f/3.5–5.6
- Nikon Nikkor AF-S 18-55mm f/3.5-5.6G DX ED f/3.5–5.6
- Nikon Nikkor AF-S 18-55mm f/3.5-5.6G DX VR f/3.5–5.6
- Nikon Nikkor AF-S 18-55mm f/3.5-5.6G DX VR II f/3.5–5.6
Frequently asked questions#
Is the Tokina AF 12-28mm f/4 AT-X Pro DX 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 AF 12-28mm f/4 AT-X Pro DX equivalent to on APS-C?
Its focal length is already the real value for APS-C: 12–28 mm frames like 18–43 mm on full frame.
What is the Tokina AF 12-28mm f/4 AT-X Pro DX good for?
As a standard zoom it suits everyday shooting, travel, events and walkaround use.
Sources & licences#
- Lensfun lens database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources