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Canon EF 40mm f/2.8 STM

Canon EF Autofocus

Canon EF 40mm f/2.8 STM

Focal length
40 mm
Aperture
f/2.8
Weight
130 g
Filter diameter
52 mm
Min. focus distance
30 cm
Length
22.8 mm
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At a Glance

This pancake lens is a compact 130 g moderate wide-angle prime for Canon EF full frame, with a 40 mm focal length. It offers an f/2.8 maximum aperture, an STM motor, and focusing down to 30 cm at 0.18x magnification. It suits street photography, reportage, everyday shooting and travel.

Good for

  • Street
  • Reportage
  • Everyday
  • Travel

Derived from the manufacturer data, not from our own tests. How we check

Technical Specifications

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Min. focal length
40 mm
Max. focal length
40 mm
Max. aperture (min. zoom)
f/2.8
Max. aperture (max. zoom)
f/2.8
Min. aperture
f/22
Elements
6
Groups
4
Weight
130 g (0.29 lb)
Filter diameter
52 mm
Min. focus distance
30 cm (11.81 in)
Max. magnification
1:5.6 (0.18×)
Length
22.8 mm (0.9 in)
Diameter
68.2 mm (2.69 in)
Released
June 2012

Manufacturer data: global.canon

Last checked: October 13, 2026 (against the manufacturer data) · How we check

Simulate depth of field and angle of view

Compare with other lenses

Which cameras does the Canon EF 40mm f/2.8 STM fit?

The Canon EF 40mm f/2.8 STM is a full-frame lens for Canon EF cameras. On full-frame bodies it uses the whole sensor; on APS-C Canon EF cameras its field of view equals 64 mm in full-frame terms.

Canon EF cameras

Full frame:
Canon EOS-1D X Mark III,Canon EOS 6D Mark II,Canon EOS-1D X Mark II,Canon EOS 5D Mark IV,Canon EOS 5Ds,Canon EOS 5Ds R,Canon EOS 5D Mark III,Canon EOS 6D,Canon EOS-1D C,Canon EOS-1D X,Canon EOS 5D Mark II
APS-C:
Canon EOS 850D (Rebel T8i),Canon EOS 90D,Canon EOS 250D (Rebel SL3),Canon EOS 4000D (3000D, Rebel T100),Canon EOS 2000D (1500D, Rebel T7),Canon EOS 800D (Rebel T7i),Canon EOS 77D,Canon EOS 200D (Rebel SL2),Canon EOS 80D,Canon EOS 1300D (Rebel T6),Canon EOS 750D (Rebel T6i),Canon EOS 760D (Rebel T6s),Canon EOS 7D Mark II,Canon EOS 1200D (Rebel T5),Canon EOS 70D,Canon EOS 700D (Rebel T5i),Canon EOS 100D (Rebel SL1),Canon EOS 650D (Rebel T4i),Canon EOS 60Da,Canon EOS 600D (Rebel T3i),Canon EOS 1100D (Rebel T3),Canon EOS 550D (Rebel T2i),Canon EOS 60D,Canon EOS 7D,Canon EOS 500D (Rebel T1i),Canon EOS 50D,Canon EOS 450D (Rebel XSi),Canon EOS 1000D (Rebel XS)

With the Canon Mount Adapter EF-EOS R the lens can also be used on Canon RF cameras.

With the Canon Mount Adapter EF-EOS M the lens can also be used on Canon EF-M cameras.

Canon EF 40mm f/2.8 STM compared

Key specs side by side with the most similar Canon EF lenses.

LensCanon EF 40mm f/2.8 STMVenus Laowa Acris 35mm F2.8 1X Macro APOSigma 40mm F1.4 DG HSM ArtVoigtlander 40mm F2 Ultron SL II
Focal length40 mm35 mm40 mm40 mm
Max. aperturef/2.8f/2.8f/1.4f/2
Weight130 g530 g1,200 g200 g
Filter diameter52 mm72 mm82 mm52 mm
Min. focus distance30 cm18 cm40 cm38 cm
Length22.8 mm–131 mm25 mm
Autofocusyesyesyesno
Image stabilizationnononono
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Canon EF 40mm f/2.8 STM: FAQ

Does the Canon EF 40mm f/2.8 STM have autofocus?

Yes, the Canon EF 40mm f/2.8 STM has autofocus.

Does the Canon EF 40mm f/2.8 STM have image stabilization?

No, the Canon EF 40mm f/2.8 STM has no stabilization of its own. On cameras with in-body image stabilization (IBIS) the image is still stabilized.

How much does the Canon EF 40mm f/2.8 STM weigh?

The Canon EF 40mm f/2.8 STM weighs 130 g. It is 22.8 mm long with a diameter of 68.2 mm.

What filter size does the Canon EF 40mm f/2.8 STM use?

The Canon EF 40mm f/2.8 STM takes 52 mm screw-in filters.

How close can the Canon EF 40mm f/2.8 STM focus?

The minimum focus distance of the Canon EF 40mm f/2.8 STM is 30 cm, measured from the sensor plane.

Is the Canon EF 40mm f/2.8 STM a full-frame lens?

Yes, the Canon EF 40mm f/2.8 STM covers full frame. On APS-C cameras its field of view equals 64 mm in full-frame terms.

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