The EF40mm f/2.8 STM was a standard

prime lens In film and photography, a prime lens is a fixed focal length photographic lens (as opposed to a zoom lens), typically with a maximum aperture from f2.8 to f1.2. The term can also mean the primary lens in a combination lens system. Confusion be ...

which was introduced by

Canon Canon or Canons may refer to: Arts and entertainment * Canon (fiction), the conceptual material accepted as official in a fictional universe by its fan base * Literary canon, an accepted body of works considered as high culture ** Western can ...

in June 2012, alongside the EOS 650D/Kiss X6i/Rebel T4i.Technical data of the Canon EF 40mm STM
/ref> The lens features a maximum aperture of f/2.8. It was Canon's first EF

pancake lens A pancake lens is colloquial term for a flat, thin camera lens assembly (short barrel). The majority are a prime lens of normal or slightly wider angle of view. Some are zoom lenses. Motivation Pancake lenses are primarily valued for providing ...

. The EF 40mm was the first EF lens equipped with a

stepping motor A stepper motor, also known as step motor or stepping motor, is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can be commanded to move and hold at one of these steps without any posi ...

(STM). It was discontinued in March 2021.

References

External links

*
EF40mm f/2.8 STM - Canon Camera Museum
Canon EF lenses Camera lenses introduced in 2012 Pancake lenses {{photo-stub

See also

References

External links