Wide-angle prime · Full frame

Zeiss Distagon T* 25mm f/2.8 ZF.2

The Zeiss Distagon T* 25mm f/2.8 ZF.2 is a full frame prime lens (25 mm, f/2.8) for Nikon F and Pentax K. It belongs to the wide-angle prime class — ideal for street, environmental portraits, landscapes and astro.

25 mmf/2.8Nikon FPentax K
25 mm
Focal length
f/2.8
Maximum aperture
82°
Diagonal angle of view (Full frame)
Full frame
Designed for

Specifications#

Brand
Zeiss
Model
Distagon T* 25mm f/2.8 ZF.2
Lens type
Wide-angle prime
Focal length
25 mm
Maximum aperture
f/2.8
Image circle
Full frame (36×24 mm)
Mount(s)
Nikon F, Pentax K
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 formatAt 25 mmEquiv. aperture (DoF)
Full frame25 mm · 82°f/2.8
APS-C38 mm · 59°f/4.2
APS-C (Canon)40 mm · 56°f/4.5
Micro Four Thirds50 mm · 47°f/5.6

Depth of field & background blur#

Computed on its native Full frame format (CoC 30 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: 24 mm f/2.8 on full frame.

FocalApertureat 1 mat 2 mat 5 mat 10 mHyperfocalBlur @2 m
25 mmf/2.826.7 cm1.14 m12.1 m∞7.47 m0.3%
25 mmf/438.8 cm1.77 m109 m∞5.23 m0.2%
25 mmf/887.1 cm7.14 m∞∞2.63 m0.1%

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).

BodyMin. handheld shutter (longest focal)500 rule at 25 mmNPF at 25 mm, f/2.8
Full frame1/25 s20 s11 s
APS-C1/40 s13 s9 s
APS-C (Canon)1/40 s12 s8 s
Micro Four Thirds1/50 s10 s8 s

Adapt it to other systems#

Frequently asked questions#

Is the Zeiss Distagon T* 25mm f/2.8 ZF.2 full frame?

Yes — it covers the full 36 × 24 mm frame.

What is the Zeiss Distagon T* 25mm f/2.8 ZF.2 equivalent to on APS-C?

On a 1.5× APS-C body it frames like 38 mm, and like 40 mm on Canon APS-C.

What is the Zeiss Distagon T* 25mm f/2.8 ZF.2 good for?

As a wide-angle prime it suits street, environmental portraits, landscapes and astro.

Sources & licences#

Last updated October 03, 2026 · How we calculate · Sources