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Canon EF-S 10-18mm f/4.5-5.6 IS STM Lens Review

Gary Wolstenholme reviews the new Canon EF-S 10-18mm f/4.5-5.6 IS STM Lens for Canon APS-C cameras.

|  Canon EF-S 10-18mm f/4.5-5.6 IS STM in Interchangeable Lenses
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Handling and Features

Canon EF S 10 18mm IS STM Lens (2)

This compact ultra-wide angle lens for Canon APS-C format digital SLRs features Canon's latest stepping focusing motor technology, which promises, smoother, quieter autofocus performance, which is especially suited to recording video. The lens also sports Optical Image Stabilisation and is priced under £300.

Canon EF-S 10-18mm f/4.5-5.6 IS STM Handling and Features

Canon EF S 10 18mm IS STM Lens (4)

For a lens that provides such a wide field of view, this optic is remarkably lightweight, tipping the scales at only 240 grams. The lens barrel is constructed from high quality plastics, finished with a silver ring around the front of the lens. As it is an EF-S lens, it can only be mounted on E-FS compatible Canon cameras, like the EOS 700D used for testing, and although the plastic lens bayonet may not inspire confidence for many, it should be more than capable of supporting the light weight of this lens. The lens balances well with this camera, thanks to its compact size, making a good combination for travel.

Autofocus is very swift and precise and virtually silent. Unlike many of Canon's USM lenses, full time manual focus override is not possible and manual focusing is performed by the focusing motor. Manual adjustments can be made in single focus mode once the lens has locked onto a target. The manual focusing is only very lightly damped, but as depth of field is so deep due the relatively slow maximum aperture and short focal lengths covered by the zoom range, this isn't really an issue. A small switch on the side of the lens allows switching between manual and autofocus quickly.

EF-S 10-18mm f/4.5-5.6 IS STM

Focusing is performed internally, so the 67mm filter thread doesn't rotate, making this lens ideal for use with polarising and graduated filters.

It is debatable whether image stabilisation is really a benefit on a lens covering such wide angles of view. Even so, I managed to take sharp hand held images at 18mm with shutter speeds as slow as a quarter of a second, which is roughly three stops slower than the usual rule of thumb for hand held shooting images would allow.

Canon EF S 10 18mm IS STM Lens (5)
Canon EF-S 10-18mm f/4.5-5.6 IS STM Performance

At maximum aperture and 10mm sharpness is already outstanding in the centre of the frame, with the clarity towards the edges of the frame reaching very good levels. Peak sharpness is achieved between f/5.6 and f/8 for this focal length, and sharpness is outstanding in the centre and not far off excellent towards the edges at these apertures.

With the lens zoomed to 14mm, sharpness in the centre of the frame at maximum aperture remains outstanding, with performance falling just short of excellent towards the edges at maximum aperture. Peak sharpness across the frame is achieved at f/5.6 for this focal length where sharpness is excellent across the frame.

Finally, at 18mm, performance is much the same as at other focal lengths, with sharpness in the centre of the frame being outstanding at maximum aperture, and very good clarity being recorded towards the edges of the frame. Peak performance is at f/8 for this focal length, with sharpness being excellent across the frame.


How to read our charts

The blue column represents readings from the centre of the picture frame at the various apertures and the green is from the edges. Averaging them out gives the red weighted column.

The scale on the left side is an indication of actual image resolution. The taller the column, the better the lens performance. Simple.

For this review, the lens was tested on a Canon EOS 700D using Imatest.


Chromatic aberrations are well controlled throughout the zoom range, only just exceeding three quarters of a pixel width at 10mm towards the edges of the frame. These low levels of CA will rarely be visible, even in images with high contrast towards the edges of the frame.


How to read our charts

Chromatic aberration is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Apochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.

For this review, the lens was tested on a Canon EOS 700D using Imatest.


Falloff of illumination towards the corners of the frame is fairly prominent at maximum aperture and 10mm with the corners being 1.81 stops darker than the image centre. At 18mm falloff is reduced to 1.2 stops darker than the image centre at maximum aperture and visually uniform illumination is achieved with the aperture stopped down to f/5.6 and beyond throughout the zoom range.

Distortion is pretty well controlled for an ultra-wide zoom lens, with Imatest detecting 3.2% barrel at 10mm and 0.302% pincushion at 18mm. This level of distortion should pose few issues for general snaps, but may cause some issues in images with straight lines parallel to the edges of the frame. If straight lines are paramount, then you'll be glad to hear that the distortion pattern is uniform across the frame, which should make corrections fairly easy to apply.

Few issues with flare were encountered during testing, with only a slight amount of flare being noticeable when shooting with the sun in the frame. However, no lens hood is supplied as standard, so if you require one for peace of mind, then an EW-73C hood can set you back up to £25.

Canon EF-S 10-18mm f/4.5-5.6 IS STM Sample Photos

Value For Money

Currently, this lens is available for around £300, which seems very reasonable, especially as this lens has only just been launched. Those who require a slightly faster maximum aperture, full time manual focus override and four millimetres more zoom range may consider Canon's EF-S 10-22mm f/3.5-4.5 USM lens. However, it is currently around £170 more expensive than this lens.

The closest equivalent from third party manufacturers is Sigma's 10-20mm f/4-5.6 EX DC HSM lens, which adds two millimetres extra zoom range, but lacks image stabilisation and costs around £50 more.

Tamron's 10-24mm f/3.5-4.5 Di II LD lens may also be considered as an alternative as it adds 6mm extra zoom range and a faster maximum aperture, but lacks IS and costs around £60 more.

Canon EF-S 10-18mm f/4.5-5.6 IS STM Verdict

It is quite amazing that budget lenses like this are able to deliver image quality you'd expect from top of the range, professional quality glass from a few years ago. This lens delivers excellent sharpness, low CA and reasonable distortion, which is fantastic for a lens costing under £300.

If you don't require a fast maximum aperture for your ultra-wide angle shots with your APS-C Canon DSLR, then this lens should be more than adequate, whilst keeping some of your hard earned pennies in your wallet, pocket or purse.

Canon EF-S 10-18mm f/4.5-5.6 IS STM Pros

Excellent sharpness
Fast focusing
Image stabilisation
Very good value for money

Canon EF-S 10-18mm f/4.5-5.6 IS STM Cons

No hood included as standard


The Canon EF-S 10-18mm lens delivers professional quality images and it is very good value for money.


Canon EF-S 10-18mm f/4.5-5.6 IS STM Specifications

Lens Mounts
  • Canon EF-S
Focal Length10mm - 18mm
Angle of ViewNo Data
Max Aperturef/4.5 - f/5.6
Min Aperturef/22 - f/29
Filter Size67mm
35mm equivalent16mm - 29mm
Internal focusingNo Data
Maximum magnificationNo Data
Min Focus22cm
Box Contents
Box ContentsLens, front and rear caps

View Full Product Details

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Niknut Plus
11 2.9k 82 United Kingdom
21 Jul 2014 3:30PM
Now that's a sensible piece of kit !!!

Great focal length range, compact, lightweight.....& still giving a great optical quality
at a very sensible price.........

A wideangle lovers delight !!!.Smile
alistairfarrugia 8 164 88 Malta
23 Jul 2014 10:44PM
It's already on my 70D. Haven't tested it much yet though, but will certainly be trying to find some time in the coming days to give it a run for its (little) money! Thanks Canon for producing this baby! Grin
Flymoman 8 2 United Kingdom
28 Jul 2014 1:17PM
I'd love one of these. Great price and performance.
About time Nikon made something similar. The cheapest of the Nikon own branded ultra wide for dx is the 10-24 which is 650 new or the 12-24 which is over 8001. Almost makes me want to switch to Canon to get one of these. Nikon seems to have forgotten it's DX lens market for the last 2 years other than a couple of superzooms. About time they brought out some good dx lenses.
StrayCat 17 19.1k 3 Canada
10 Dec 2017 10:57AM
I have used this lens on a 77D for video in the house of the kids dancing, it performed flawlessly. It’s perfect for video at close range, and with only a couple of lamps on in the livingroom, the kids stayed in focus throughout.

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