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Canon EF 40mm f/2.8 STM

Standard "pancake" prime lens for Canon EOS SLR cameras

8 Reviews

Item # 280EF40MM

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Was: $199.00

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Our take on the Canon EF 40mm f/2.8 STM

If you own a Canon DSLR, this lens will fast become part of your essential traveling kit. Its "pancake" profile and low weight make it too portable to ignore, and when you add Canon's impeccable build quality and the lens' light sensitivity into the equation, it all adds up to "I have to have one."

If you own a Canon DSLR, this lens will fast become part of your essential traveling kit. Its "pancake" profile and low weight make it too portable to ignore, and when you add Canon's impeccable build quality and the lens' light sensitivity into the equation, it all adds up to "I have to have one."

You can shoot a huge variety of subjects, near and far, with this lens due to its versatile fixed focal length: 40mm on full-frame sensors/35mm film cameras, and 64mm on APS-C sensors. And the newly designed stepping motor for the autofocus system is incredibly quiet, making it perfect for video capture.

Product Highlights:

  • EF 40mm f/2.8 STM (stepping autofocus motor)
  • compatible with Canon digital and autofocus film SLR cameras
  • effective focal length:
    • 40mm with 35mm film or full-frame digital cameras
    • 64mm with APS-C sensor cameras
  • lightweight, low-profile "normal" lens is truly versatile
  • ultra-quiet autofocus stepping motor for responsive yet silent video shooting
  • consistent image quality across the frame
  • internal focusing system maintains constant lens length
  • optimized coatings and an aspherical element preserve sharpness and minimize flares
  • minimum focus distance: 1.81" (from film or sensor plane to subject)
  • minimum aperture: f22
  • lens construction: 6 elements in 4 groups
  • diaphragm blades: 7
  • attachment/filter size: 52mm
  • front and rear lens caps supplied
  • lens is 2-11/16" in diameter, 1-3/16" long
  • weight: 4.6 oz.
  • warranty: 1 year
  • Our 60-day money-back guarantee

What's in the Box:

  • EF40mm f/2.8 STM lens
  • 52mm Front lens cap (installed)
  • Rear lens cap (installed)
  • Instructions
  • Warranty/Registration card

Awesome lens specially for taking close-up portrait shots and low-light night scenes.

Manny, California


Canon EF 40mm f/2.8 STM Reviews

Average Customer Review(s):

(8 Reviews)
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Features and Specs

Brand Compatibility Canon
Image Stabilization No
Focal Length 40mm
Maximum Aperture f/2.8
Weight 4.6 ounces
Parts Warranty 1 Year
Labor Warranty 1 Year

Product Research


Overview: The Canon EF 40mm f/2.8 STM is an ultra-slim, standard single focal point lens. This lightweight lens weighs only 4.6 oz. (130g).

Compatibility: The EF 40mm f/2.8 STM has a standard Canon EF mount, and is compatible with all Canon digital SLRs, as well as Canon EOS film SLRs. It has a focal length of 40mm with 35mm film and full-frame digital cameras. With APS-C sensor cameras, the focal length is 64mm.

Lens Construction: The Canon EF 40mm f/2.8 STM lens features a lens construction with 6 elements in 4 groups.

Diagonal Angle Of View: This Canon standard telephoto lens provides a diagonal angle of view of 57° 30'.

Auto/Manual Focus: The lens has a minimum focusing distance of 0.98'. To shoot in Autofocus mode, set the focus mode switch on the lens to "AF". To manually focus the camera, set the switch to "MF", and focus by turning the focusing ring. The focusing ring always works, regardless of the focus mode.

Stepping Motor (STM): The lens provides smooth and quiet continuous Auto Focus due to the newly developed stepping motor.

Optional Accessories: The lens has a filter diameter of 52mm. Optional filters and a lens hood can be attached to the lens, if desired.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Staff Reviews

Product reviews from the Crutchfield Labs

I love pancakes!

Written by Zak Billmeier, Video Producer, on 6/4/2013 9:04:00 AM

One complaint many people have with SLR cameras is their bulk — really, though, it's the combined bulk of camera and lens that makes an SLR difficult to carry. But strap on this tiny (Canon's lightest) lens, and you may feel differently.

It's got a lot going for it other than it's small size. First and foremost, it's seriously sharp, even wide open at f/2.8. Second, it renders out-of-focus backgrounds with a creamy smoothness that helps accentuate your in-focus subject. Get in close with this little lens and your backgrounds melt away.

But back to the size: you barely even notice this little gem is there on your camera. I took it on a trip recently and was walking around a city for four days snapping tons of photos. Compared to some of the other lenses I lug around, the 40mm pancake was a delight. You could even slip it into a pocket for a second lens. It's a great value, and I recommend it highly.

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Why did you buy this?

Great lens! [ Steven  Aug 15, 2017 ]
Cheap but extremely useful and effective! [ Nicholas  Nov 24, 2016 ]