Zeiss Touit 2.8/12 Specs, Equivalents & Depth of Field

12 mm

Focal length

f/2.8

Maximum aperture

99°

Diagonal angle of view (APS-C)

APS-C

Designed for

Specifications#

Brand: Zeiss
Model: Touit 2.8/12
Lens type: Ultra-wide prime
Focal length: 12 mm
Maximum aperture: f/2.8
Image circle: APS-C (23.5×15.6 mm)
Mount(s): Fujifilm X-mount, 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 12 mm	Equiv. aperture (DoF)
APS-C	18 mm · 99°	f/4.2
APS-C (Canon)	19 mm · 96°	f/4.5
Micro Four Thirds	24 mm · 84°	f/5.6

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/2.8 on aps-c.

Focal	Aperture	at 1 m	at 2 m	at 5 m	at 10 m	Hyperfocal	Blur @2 m
12 mm	f/2.8	87.5 cm	7.06 m	∞	∞	2.64 m	0.1%
12 mm	f/4	1.51 m	∞	∞	∞	1.85 m	0.1%
12 mm	f/8	∞	∞	∞	∞	93.2 cm	0.0%

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/2.8
APS-C	1/20 s	28 s	18 s
APS-C (Canon)	1/20 s	26 s	17 s
Micro Four Thirds	1/25 s	21 s	16 s

Compatible cameras#

Bodies in our database with a native Fujifilm X-mount and Sony E-mount mount. Full-frame bodies switch to an APS-C crop with this lens.

Adapt it to other systems#

Nikon Z Pentax Q Nikon Z Nikon 1 (CX)Pentax Q

Similar lenses#

Laowa 12mm f/2.8 Zero-D f/2.8
Samyang 12mm f/2.0 NCS CS f/2
Samyang 12mm f/2.8 Fish-Eye ED AS NCS f/2.8
Samyang AF 12mm f/2.0 f/2
Viltrox AF 13mm F1.4 f/1.4
Sony E 11mm f/1.8 f/1.8
Samyang 14mm f/2.8 AE ED AS IF UMC f/2.8
Samyang AF 14mm f/2.8 f/2.8
Sigma 14mm f/1.8 DG HSM | A f/1.8
Sony FE 14mm f/1.8 GM f/1.8
Viltrox AF 14mm f/4.0 f/4
Laowa 10mm f/2.8 Zero-D FF f/2.8

Frequently asked questions#

Is the Zeiss Touit 2.8/12 full frame?

No — it is designed for APS-C sensors. On a full-frame body it vignettes or triggers crop mode.

What is the Zeiss Touit 2.8/12 equivalent to on APS-C?

Its focal length is already the real value for APS-C: 12 mm frames like 18 mm on full frame.

What is the Zeiss Touit 2.8/12 good for?

As a ultra-wide prime it suits astrophotography, landscapes and dramatic perspectives.

Sources & licences#

Lensfun lens database — CC BY-SA 3.0