Viltrox 25mm F1.7 E Specs, Equivalents & Depth of Field

25 mm

Focal length

f/1.7

Maximum aperture

82°

Diagonal angle of view (Full frame)

Full frame

Designed for

Specifications#

Brand: Viltrox
Model: 25mm F1.7 E
Lens type: Wide-angle prime
Focal length: 25 mm
Maximum aperture: f/1.7
Image circle: Full frame (36×24 mm)
Mount(s): Sony E-mount, Fujifilm X-mount, Nikon Z
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 25 mm	Equiv. aperture (DoF)
Full frame	25 mm · 82°	f/1.7
APS-C	38 mm · 59°	f/2.5
APS-C (Canon)	40 mm · 56°	f/2.7
Micro Four Thirds	50 mm · 47°	f/3.4

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/1.8 on full frame.

Focal	Aperture	at 1 m	at 2 m	at 5 m	at 10 m	Hyperfocal	Blur @2 m
25 mm	f/1.7	16.0 cm	66.2 cm	4.86 m	48.2 m	12.3 m	0.5%
25 mm	f/4	38.8 cm	1.77 m	109 m	∞	5.23 m	0.2%
25 mm	f/8	87.1 cm	7.14 m	∞	∞	2.63 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 25 mm	NPF at 25 mm, f/1.7
Full frame	1/25 s	20 s	10 s
APS-C	1/40 s	13 s	7 s
APS-C (Canon)	1/40 s	12 s	7 s
Micro Four Thirds	1/50 s	10 s	6 s

Compatible cameras#

Bodies in our database with a native Sony E-mount, Fujifilm X-mount and Nikon Z mount.

Adapt it to other systems#

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

Similar lenses#

Zeiss Batis 25mm f/2 f/2
Nikon Nikkor Z 26mm f/2.8 f/2.8
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
Viltrox AF 24mm f/1.8 Z f/1.8

Frequently asked questions#

Is the Viltrox 25mm F1.7 E full frame?

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

What is the Viltrox 25mm F1.7 E 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 Viltrox 25mm F1.7 E 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