Canon EF 40mm f/2.8 STM Pancake Lens ( THE BEST Review 2020 )

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Image source : expert photography

Today I’m checking on maybe the foremost seasoned pay attention in my camera sack. The Canon EF 40mm f/2.8 STM (short-term memory) flannel cake pay attention has outlasted varied extraordinary focal points in my pack, and that i use it much each day.

So what makes this smaller than traditional optic thus convincing? Is it directly for you, or wouldn’t it be a decent plan for you to seem towards the clever fifty, or even a 35mm focal point? examine on to find.

Overview of the EF 40mm f/2.8 STM

canon ef 40mm f/2.8 stm lens,
image source : expert photography

This lens is one amongst Canon’s new additions to the EF lineup of DSLR lenses. it had been introduced in 2012, thus it’s quite young lens as way as EF lenses go. it’s one amongst the littlest full-frame DSLR optics ever.

To date, it’s the littlest lens offered for the Canon DSLR, together with its crop-sensor (almost-) equivalent, the EF-S 24mm f / 2.8 STM. The latter was my 1st lens – thus once I bumped the ship into full-frame cameras, it appeared cheap to shop for 40mm.

Apart from the convenience it offers its size, 40mm is optionally wonderful. It improves its nearest possibility, 50mm f / 1.8 even at f / two.8.

What’s within the Box?

As a fairly low-cost lens, its packaging is moderate. Besides the lens (with each caps provided}) and thus the user manual, there’s nothing else in there.

The ES-52 official lens hood is out there individually, however I don’t suggest buying it for many reasons.

It has identical no-brand alternatives for fewer dear . It additionally will virtually nothing to protect the lens or block daylight with its minuscule size. Luckily, the lens’ optical performance makes it for the most part extra.

Who is that the EF 40mm f/2.8 STM For?

This lens is for everybody UN agency desires to essentially replace the body cap on their camera. With its size, it’s ideal for fast grab-and-go shoots, street and documentary, photojournalistic, even event photography.

Even if it can’t entirely hide the actual fact that you’re carrying a large DSLR, it makes it somewhat less obtrusive and horrifying. This helps with portraits, particularly candid shots.

It additionally helps to urge into places wherever associate degree large camera wouldn’t commonly be allowed. i wont to be able to escape shooting concerts on many occasions with this lens and my 5D camera.

Still, the 50mm f/1.8 short-term memory provides you similar benefits, albeit it’s slightly larger. There square measure many reasons I selected the 40mm over that inside the top of the day , when having used each for years.

First, that little size distinction will matter, and thus the 40mm has the advantage there. Second, I don’t shoot portraits as usually as street photography. There, corner sharpness is significant , thus the 40mm has won once more. It’s additionally slightly bit sturdier engineered.

I don’t suggest this lens for crop sensing element cameras.

The 40mm focal length isn’t extremely convenient on a crop sensing element, a minimum of in my expertise. opt for the 24mm f/2.8 short-term memory instead, that is that the 40mm’s very little relation.

Key options

Mount and Compatibility

The Canon EF 40mm f/2.8 STM short-term memory is made primarily for full-frame EF-mount cameras.

These square measure the Canon Eos 6D, EOS 5D, and Eos 1DX/1Ds series of digital cameras, additionally as all of Canon’s 35mm film cameras since 1987.

However, the lens can work dead on crop-sensor Eos bodies (such as a result of the 7D, 10D-90D series, and each one the Rebels).

It can also be custom-made while not loss in optical device speed to Canon’s full-frame mirrorless R bodies (currently the R, RP, R6, and R5).

I really used it to envision and review the Eos RP, as I found them to be a superb , little dance band.Canon camera with EF 40mm f/2.8 STM Lens

It will work simply fine with a little come by autofocusing speed on Canon’s crop-sensor mirrorless EF-M-mount cameras (e.g. the M100, M50, M5, M6).

You can additionally attach any EF mount device presently in use to the current lens. These embrace adaptors to Sony E-mount, Fujifilm X-mount, small Four Thirds, Nikon Z-mount, Leica L-mount, and more.

Autofocusing speed and reliableness on these off-brand cameras can depend on the quality of the device used.

Image Quality

The EF 40mm f/2.8 STM is among the best Canon lenses throughout this focal length vary. Right from f/2.8, it provides wonderful sharpness from corner to corner. It doesn’t recover on the far side f/4.

As i mentioned , it retains sharpness very well with extension tubes at shut focusing distances additionally .

In most aspects except aperture, it’s inside constant league as a result of the EF 50mm f/1.2L, that says one thing.

Its distortion level is great , barely noticeable on full-frame cameras. It’s additionally simple to correct, if you’d like a hundred and tenth straight lines all over, as it’s a extremely easy barrel-type distortion with no weird deformations.

Its out-of-focus background appearance wonderful. it’s pleasant smoothness, no ugly transitions, and borderline longitudinal aberration .

Chromatic aberration on contrasty edges is to boot well-controlled, considerably higher than on the 50mm f/1.8.

Flares don’t create abundant of a problem , and though they’re doing show up, they’re quite unnoticeable and don’t finish in a very loss of distinction.


The 40mm f/2.8 STM short-term memory has nice optical device, however terribly restricted manual focusing capabilities.

Its optical device system is fast and extremely correct. It’s responsive in terribly low light-weight, too, better, than you’d expect from associate degree f/2.8 lens and higher than the 24-70 f/2.8 II zoom at 40mm.

My copy has ne’er had any problems, not even micro-adjustments needed. This stands in stark distinction with the 50mm f/1.8 STM, of that I had 2 faulty samples before obtaining one that was consistent, and even that had to be small adjusted.

walking through busy streets within the dark.

The EF 40mm f/2.8 STM flapjack was one in all the first lenses to include a stepping optical device motor instead of the traditional USM motor, therefore the ‘STM’ mark inside the name.

This technology has helped tons with swish continuous focusing, a superb improvement for video shooters.

However, this additionally means that the manual focusing ring and thus the lens components don’t seem to be to any extent further physically connected.

A bummer for people who wish to manually focus often.

You can’t focus once the camera isn’t turned on, not even in manual focus. The ring itself is to boot virtually non-existent, being a thin plastic piece right at the front of the lens. So, no manual-focus magic here.

There is no full-time manual focus override, and unnecessary to mention at this size, there’s no distance scale.

once focusing, the front component extends out of the barrel, however it doesn’t rotate. Its minimum focusing distance is zero.3m.

Handling and Build Quality

The 40mm f/2.8 STM short-term memory flapjack lens is typically engineered of plastic, with the exception of the lens mount, that is metal.

Despite this, it looks rather solid, and it’s been taking the hits ferociously throughout years of labor and travel.

Marks of use, of course, square measure visible, however no issues with reliableness have arisen.

It doesn’t have weather-sealing, though, and with the moving front component, I ne’er wished to envision simply extremely mow abundant this is usually|this can be} often true.often not a rain or dust-friendly lens.

The only factor occupying the aspect of the lens is that the manual/autofocus switch.

It has a 52mm filter thread. Filters of this size square measure low-cost and wide offered.

Keep in mind that the optical device motor doesn’t tolerate quite one filter inside the long run .

With 2 filters, it makes weird, whirring sounds, presumptively due to the load .

The lens is 68mm in diameter (not abundant wider than the lens mount itself), and 23mm long.

It extremely is little , however at 130g, it feels quite dense.

You can attach many extension tubes and still get terribly usable results, each in image quality and handling.

However, you’re probably restricted to focusing by obtaining nearer or farther away, thanks to the poor manual focus implementation.

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