Canon

Canon EF 40mm f/2.8 STM

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Key specs

  • 6
  • 4
  • Internal;Unit
  • yes
  • Normal
  • Full-frame (35mm)
  • ;40 mm
  • no
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Canon EF 40mm f/2.8 STM Full Specifications

Image properties

Max Format size
Full-frame
Focal length, 40
Maximum magnification0.18
Image stabilisation

Aperture

Aperture max2.8
Aperture min22
Aperture ring
Number of diaphragm blades7

Optics

ConstructionFixed
Elements6
Groups4
Special elements / coatings1 Aspherical element

Focus

Focus methodInternal, Unit
Autofocus
Autofocus motor type
STP
Full-time Manual focusing
Closest focusing distance11.81 in
Distance scale
Depth of field (DoF) scale

Dimensions

Lens typeNormal
Lens mountCanon EF
Colour of productBlack
Weight0.29 lb
Diameter2.68 in
Length0.87 in
Filter size2.05 in
Sealing
Filter thread
Hood supplied
Tripod collar

Canon EF 40mm f/2.8 STM Online reviews

Canon EF 40mm f/2.8 STM review: Digital Photography Review
The EF 40mm f/2.8 STM was announced in June 2012, alongside the EOS 650D (Rebel T4i) SLR and EF-S 18-135mm f/3.5-5.6 IS STM zoom. These two lenses were Canon's first to use a linear stepper motor for focusing, giving rise to the 'STM' designation; this motor type allows silent refocusing during movie recording, and has therefore become widely-used in lenses for mirrorless cameras. This means that in principle the 40mm STM should be well-suited to working with the hybrid AF systems in Canon's recent cameras, including the 650D and its replacement the EOS 700D (Rebel T5i), the EOS M mirrorless model, and the diminutive EOS 100D (Rebel SL1).Read more

Canon EF 40mm f/2.8 STM Review | PhotographyBLOG
Expert review of the Canon EF 40mm f/2.8 STM lens.Read more