One of the main attractions of Canon’s EOS M system cameras is that they’re so small and lightweight. That makes the retractable and featherweight Canon EF-M 15-45mm f/3.5-6.3 IS STM a perfect fit. However, if you don’t mind upsizing, the non-retractable 18-150mm lens is about twice as long and twice as heavy but gives you much greater zoom range and the extra versatility that goes with it, without any loss of image quality.
Pros
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Big 28.8-240mm ‘effective’ zoom range
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4-stop optical image stabilization
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Small and lightweight for a superzoom
Cons
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Lacks the 15-45mm’s maximum viewing angle
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Hood sold separately
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Plastic mounting plate
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The Canon EF-M 18-150mm f/3.5-6.3 IS STM is an interesting option for EOS M system cameras. For a really compact and lightweight outfit, there’s a lot to be said for sticking with the tiny, retractable EF-M 15-45mm and adding the similarly small ultra-wide EF-M 11-22mm and telephoto EF-M 55-200mm if you need to bolster your range. However, if you’re in the market for a single lens to cover most of the bases, the EF-M 18-150mm is the only candidate. It’s not as wide-angle as the 15-45mm but gives far greater telephoto reach, with an effective zoom range of 28.8-240mm in full-frame terms.
Specifications
Mount: Canon EF-M Full frame: No Autofocus: Yes Stabilization: Yes Lens construction: 17 elements in 13 groups Angle of view: 74.3-10.5 degrees Diaphragm blades: 7 Minimum aperture: f/22-38 Minimum focusing distance: 0.25-0.45m Maximum magnification ratio: 0.31x Filter size: 55mm Dimensions: 61x87mm Weight: 300g
Key features
Measuring 61x87mm and weighing just 300g, it’s very compact and light for a superzoom lens, significantly undercutting the still small Tamron 18-200mm that’s designed for APS-C format DSLRs. Even so, there’s a lot packed in, including no less than 17 optical elements in 13 groups, a stepping motor-based autofocus system and a 4-stop optical image stabilizer. The lens is also compatible with 5-axis ‘Dynamic IS’ for movie capture, where featured in later EOS M-series cameras.
Build quality is good and the lens is nicely finished in the usual graphite or silver color options. A plastic rather than metal mounting plate helps to keep the weight off but no weather-seals are included and the hood is sold separately.
Performance
The autofocus system is quick and virtually silent, and the image stabilizer lives up to its 4-stop billing. Image quality is impressive for such a small superzoom, with levels of sharpness being very similar to those of the Canon EF-M 15-45mm, which naturally has a much more modest zoom range. The lens does well to control color fringing and long-zoom pincushion distortion, although barrel distortion at 18mm can be noticeable when uncorrected in-camera.
Lab results
We run a range of lab tests under controlled conditions, using the Imatest Master testing suite. Photos of test charts are taken across the range of apertures and zooms (where available), then analyzed for sharpness, distortion and chromatic aberrations.
We use Imatest SFR (spatial frequency response) charts and analysis software to plot lens resolution at the center of the image frame, corners and mid-point distances, across the range of aperture settings and, with zoom lenses, at four different focal lengths. The tests also measure distortion and color fringing (chromatic aberration).
Center-sharpness holds up well throughout the entire zoom range but is never reaches truly impressive levels. Towards the edges and corners, sharpness is pretty mediocre.
Fringing:
Without automatic in-camera corrections, color fringing can be a little noticeable towards the edges and corners of the frame at the shortest focal length, but it dies away somewhat at longer zoom settings.
Barrel distortion can be quite noticeable at the short end, whereas more modest levels of pincushion set in through the medium to long sector of the zoom range.
Verdict
One of the main attractions of Canon’s EOS M system cameras is that they’re so small and lightweight. That makes the retractable and featherweight Canon EF-M 15-45mm f/3.5-6.3 IS STM a perfect fit. However, if you don’t mind upsizing, the non-retractable 18-150mm lens is about twice as long and twice as heavy but gives you much greater zoom range and the extra versatility that goes with it, without any loss of image quality.
Matthew Richards is a photographer and journalist who has spent years using and reviewing all manner of photo gear. He is Digital Camera World's principal lens reviewer – and has tested more primes and zooms than most people have had hot dinners!
His expertise with equipment doesn’t end there, though. He is also an encyclopedia when it comes to all manner of cameras, camera holsters and bags, flashguns, tripods and heads, printers, papers and inks, and just about anything imaging-related.
In an earlier life he was a broadcast engineer at the BBC, as well as a former editor of PC Guide.
