Canon EF 40mm f/2.8 STM Lens

Features Highlight 
- The slimmest EF lens with merely 22.8mm thickness and weights only 130g to give superb mobility
- Newly developed 6 elements in 4 groups optical lens construction
- 1 high-precision Glass-Molded (GMo) Aspherical lens element to achieve high image quality from the image center to periphery
- Quiet and smooth continuous AF is supported in movie shooting and Live View shooting*1 by a thorough optimization of the continuous AF mechanism with the adoption of newly developed Stepping Motor (STM)
- 7-blade circular aperture for beautiful bokeh
- New micro-stepping drive is used in the aperture control for quieter drive during movie shooting
- 0.30m minimum focusing distance with 0.18x maximum magnification
- Lens placement and coatings are optimized for digital cameras to ensure excellent color balance and minimize ghosting and flare

 
 

 

 

First Ultra Compact EF Standard Pancake Lens with merely 22.8mm thickness, which is as slim as a lens dust cap, and weights only 130g to give superb mobility for all types of snapshots. This pancake lens features 1 high-precision Glass-Molded (GMo) Aspherical lens element to achieve high image quality from the image center to periphery. Quiet and smooth continuous AF is supported in movie shooting and Live View shooting*1 by a thorough optimization of the continuous AF mechanism with the adoption of newly developed Stepping Motor (STM). Together with 7-blade circular aperture design and the new micro-stepping drive used in the aperture control, quieter drive and beautiful bokeh can be expected for both photo and movie shooting.

*1 Applicable to EOS 650D only (as of 8th June 2012)

 

Specification 
Angle of View (diagonal) 57°30’
Lens Construction6 elements in 4 groups
Special Lens Elements1 Aspherical lens element
No. of Diaphragm Blades7 (circular aperture)
Minimum Aperturef/22
Closest Focusing Distance (m)0.30m
Maximum Magnification (x)0.18x
AF ActuatorStepping Motor (STM)
Full-time Manual FocusSupported
Image StabilizerNot Supported
Dust & Water Resistant*Not Supported
Filter Diameter (mm)52mm
Length x Diameter (mm)22.8 x 68.2 mm
Weight (g)Approx. 130g
Release DateJun-12
Accessories  
Maximum Magnification with0.50x - 0.32x
Extension Tube EF 12 II 
Maximum Magnification with0.88x – 0.70x
Extension Tube EF 25 II 
Focal Length with Extender EF 1.4X III / EF 2X IIINot compatible
Lens HoodES-52
Lens CapE-52
Lens Dust CapLens Dust Cap E
Lens CaseLP811
  
All data is based on Canon's standard testing methods. Subject to change without notice.
* With EOS-1D Series and EOS-1V, however it is not recommended for use under rain.