Canon EF 40mm F2.8 STM (pancake) Specifications

 

Canon EF 40mm F2.8 STM (pancake)

Photo © 2012 by LensTests.com

 

 

Compatibility:
analog/digital

Diagonal Angle of View:
57°

Maximum Magnification:
1:5.6

Minimum Aperture:
F22

Number of Aperture Blades:
7

Iris Pattern:
rounded

Minimum Distance:
30cm

Filter Thread:
52mm

Maximum Diameter:
68mm

Length:
27mm

Weight:
130g

Focus Type:
STM (stepper motor with fulltime manual focus), internal focus mechanism

Full Focus Throw:
150°

Dual Pixel CMOS AF:
supported

E-TTL II Distance Information:
 

IR Capability:
reported by DPanswers

Lens Hood:
ES-52

Produced:
2012

Tests:
PhotoZone tested on EOS 50D and on 5D Mark II; SLRgear; Roger Cicala; LensTests; Popular Photography 10/2012

PopPhoto Measurements:
38.92mm F2.86 at 1:4.91

 

Additional Information:
The lens shows an extreme sensitivity for applied pressure (e.g. from applying a lens cap or carrying the lens mounted to a camera in a camera bag etc.) and might stop working until it's either remounted or the camera restarted. Although is looks like a problem of physical construction Canon is going to release a firmware update to address this issue. They did not state to change physical specifications for future production models.


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