Specifications#
- Brand
- Sony
- Model
- FE 40mm f/2.5 G
- Lens type
- Standard prime
- Focal length
- 40 mm
- Maximum aperture
- f/2.5
- Image circle
- Full frame (36×24 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 40 mm | Equiv. aperture (DoF) |
|---|---|---|
| Full frame | 40 mm · 57° | f/2.5 |
| APS-C | 60 mm · 39° | f/3.8 |
| APS-C (Canon) | 64 mm · 37° | f/4.0 |
| Micro Four Thirds | 80 mm · 30° | f/5.0 |
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: 40 mm f/2.8 on full frame.
| Focal | Aperture | at 1 m | at 2 m | at 5 m | at 10 m | Hyperfocal | Blur @2 m |
|---|---|---|---|---|---|---|---|
| 40 mm | f/2.5 | 9.0 cm | 37.1 cm | 2.46 m | 11.9 m | 21.4 m | 0.9% |
| 40 mm | f/4 | 14.5 cm | 60.1 cm | 4.32 m | 33.8 m | 13.4 m | 0.6% |
| 40 mm | f/8 | 29.4 cm | 1.29 m | 16.7 m | ∞ | 6.71 m | 0.3% |
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 40 mm | NPF at 40 mm, f/2.5 |
|---|---|---|---|
| Full frame | 1/40 s | 12 s | 7 s |
| APS-C | 1/60 s | 8 s | 5 s |
| APS-C (Canon) | 1/60 s | 8 s | 5 s |
| Micro Four Thirds | 1/80 s | 6 s | 5 s |
Compatible cameras#
Bodies in our database with a native Sony E-mount mount.
- Sony α7R VI 2026
- Sony α7 V 2025
- Sony ZV-E10 II 2024
- Sony α1 II 2024
- Sony α9 III 2024
- Sony α6700 2023
- Sony ZV-E1 2023
- Sony α7C II 2023
- Sony α7CR 2023
- Sony α7R V 2022
- Sony FX30 2022
- Sony FX3 2021
- Sony ZV-E10 2021
- Sony α1 2021
- Sony α7 IV 2021
- Sony α7S III 2020
- Sony FX6 2020
- Sony α7R IV 2019
- Sony α6400 2019
- Sony α6600 2019
- Sony α6100 2019
- Sony α7 III 2018
- Sony α6300 2016
- Sony α6500 2016
- Sony α7R II 2015
- Sony α7S II 2015
- Sony α5000 2014
- Sony α5100 2014
- Sony α6000 2014
- Sony NEX-3N 2013
- Sony NEX-5T 2013
- Sony α3000 2013
- Sony α7 2013
- 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
Adapt it to other systems#
Similar lenses#
- Sigma 40mm F1.4 DG HSM | Art f/1.4
- Samyang AF 45mm f/1.8 f/1.8
- Sigma 45mm F2.8 DG DN | Contemporary 019 f/2.8
- Samyang AF 35mm f/1.8 f/1.8
- Samyang AF 35mm f/2.8 f/2.8
- Sigma 35mm F1.2 DG DN | Art 019 f/1.2
- Sigma 35mm F2 DG DN | Contemporary 020 f/2
- Sony E 35mm f/1.8 OSS f/1.8
- Sony FE 35mm f/1.4 GM (SEL35F14GM) f/1.4
- Sony FE 35mm f/1.4 ZA f/1.4
- Sony FE 35mm f/1.8 f/1.8
- Sony FE 35mm f/2.8 ZA f/2.8
Frequently asked questions#
Is the Sony FE 40mm f/2.5 G full frame?
Yes — it covers the full 36 × 24 mm frame.
What is the Sony FE 40mm f/2.5 G equivalent to on APS-C?
On a 1.5× APS-C body it frames like 60 mm, and like 64 mm on Canon APS-C.
What is the Sony FE 40mm f/2.5 G good for?
As a standard prime it suits street, documentary, everyday and low-light shooting.
Sources & licences#
- Lensfun lens database — CC BY-SA 3.0
Last updated October 03, 2026 · How we calculate · Sources