Canon EF 40mm f/2.8 STM

Fixed "normal" focal length pancake lens for select Canon digital and film SLRs

Item #: 280EF40MM

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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

See Digital SLR Cameras that work with this item

Hands-on research

What's in the box?

Download owner's manual

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

Features and Specs

General
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

Features

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 open the box, verify contents, 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.

Canon EF 40mm f/2.8 STM Reviews

Average Customer Review:

4 reviews
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AWESOME LENSE!

Written By shenlonco, NJ on Wednesday, July 02, 2014

Crutchfield Customer Review (What's this?)

Very sharp even at 2.8! compared to my older 1.8 50mm II lens this one is worlds better in every way!

Pros: light weight can bring every place you go and super sharp crisp photos focus point on all the time!

Cons: wish the lens motor for focusing was not as loud you can here it in video.

excellent lens

Written By Paul, Charlottesville on Saturday, July 06, 2013

Read the reviews. This is an excellent lens. It's fast. It's sharp at the edges, as well as at the center. It gathers enough light to work very well indoors under a wide range of lighting conditions without a flash. In terms of bang for the buck, this is probably Canon's best.

Crutchfield, as always, was top notch. I've been a customer for 30 years. There's good reason for it.

Pros: Sharp, fast, small, light-weight (turns your DSLR into an easy walk-around camera), works well indoors and out.

Cons: Read about losing manual focus when the camera sleeps. It's easy to get back by half depressing shutter release. I think there's a firmware fix also.

Quick focusing

Written By Denz, Ny,11373 on Saturday, June 08, 2013

Crutchfield Customer Review (What's this?)

Fast focusing and very sharp. The material is made of steel, sturdy & heavy unlike the other prime lens that made of plastic.

Pros: Great for details and low light

Cons: Produce a little noise in video

Great Little Lens

Written By FredW, Kingsport, TN on Tuesday, July 17, 2012

Crutchfield Customer Review (What's this?)

I purchased this lens to use on my 5D Mk3. It is the perfect small lens. It is small, light, and fast with extremely good image quality. Focus is fast, contrast is high, and corner to corner sharpness is great even at f2.8. I plan to use this lens indoors, as a walk around or anywhere that I don't want to carry my 24-105L.

Pros: Sharp corner to corner Very low CA Very low distortion Good focus speed and manual focusing override Very little vignetting at f5.6 and narrower.

Cons: Fair amount of vignetting at f2.8 Some vignetting at f4.

Product reviews from the Crutchfield Labs

I love pancakes!

Written by Zak Billmeier, Staff Writer - Creative, 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.

What are the Labs?

Get everything you’ll need to enjoy your new Canon EF 40mm f/2.8 STM

Protect your lens from minor bumps and scratches. Lens filters can reduce reflections or glare, or increase contrast on your shots.
Keep your new lens safe from bumps and scratches.
Get your lenses clean and fingerprint-free with a cleaning kit.
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