Canon RF 24-240mm f/4-6.3 IS USM review

Canon RF 24-240mm f/4-6.3
Written by Pro Windroid


As with most superzooms, you’ll want to keep the various lens corrections enabled to iron out this Canon’s optical shortcomings, but the core of the canon 24-240mm is solid: sharp images, very effective image stabilization and fast focus make it a winner.


  • Excellent zoom range for such a lens
  • Smooth, silent and fast AF performance
  • Very effective image stabilizer
  • Very good sharpness at telephoto lengths


  • No weather resistance
  • A little heavy (though this is a full-frame superzoom)
  • Moderate distortion visible at both ends of the lens
  • Somewhat expensive

Ordinance’s still-new EOS R framework may have energized EOS DSLR clients hoping to change to mirrorless innovation, however by far most of focal points discharged for the framework so far have been huge and expensive L-arrangement alternatives, ones that will unquestionably be out of the span of many.

The RF 24-240mm f/4-6.3 IS USM on test, in any case, is one of two progressively ordinary, non-L-arrangement alternatives, the other being the Canon RF 35mm f/1.8 IS Macro STM. While despite everything it directions a generally high three-figure value, it’s something of an irregularity for a compatible focal point framework optic in that it offers a 10x optical zoom extend – and for the voyaging picture taker at which it’s pointed, that USP may sufficiently be to induce them to part with their money.


Five-stop Optical Image Stabilizer with Dynamic IS

Nano USM centering engine and full-time manual core interest

Least centering separation of 50cm (wide)/78cm (fax)

The focal point has been planned with 21 components spread crosswise over 15 gatherings, with two of these bearing ultra-low-scattering properties and a further component having an aspheric surface. These should battle chromatic deviation, circular variation and corner delicateness, in addition to other things.

The most extreme opening of f/4-6.3 may not sound excessively amazing, yet a more extensive gap would almost certainly bargain size and weight; and gratitude to the coordinated five-stop Image Stabilization framework you should even now have the option to get more keen pictures at more slow screen speeds when utilizing the fax part of the bargain, also an increasingly steady viewfinder/LCD picture for progressively exact sythesis.

Centering is dealt with by a “close quiet” Nano USM engine, which guarantees quick and exact self-adjust crosswise over stills and video, and you can physically supersede this with the centering ring without changing to manual concentrate first.

You can center as close as 50cm from your subject at the wide-point end, and 78cm away from it when you’re at the fax end, which is superbly decent for such a focal point. (Sony’s FE 24-240mm, for instance, has a similar least centering separation of 50cm at its wide-point end, while it’s 80cm at the fax end).

The stomach just has seven cutting edges, in spite of the fact that Canon guarantees that it’s round enough to convey smooth bokeh. Different highlights incorporate a locking capacity for the zoom ring to keep it set up, and a 72mm channel string at the front for ordinary screw-in channels. There’s likewise a control ring around the barrel – more on that in a second.

Manufacture quality and taking care of

Adjustable control ring

Weighs 26.4oz/750g

No climate fixing

Similarly as with all RF focal points as of now accessible, the barrel of the Canon RF 24-240mm f/4-6.3 IS USM is surrounded by a control ring, the capacity of which can be modified to your inclination. Four choices are accessible: introduction pay, screen speed, gap, and ISO, so there’s no compelling reason to change the choice based on your personal preference through the menus or body controls – you simply turn the ring.

The ring is clickless, thus gives no criticism being used, despite the fact that this makes it unmistakably progressively appropriate for use during video recording. At the point when used to alter the opening during chronicle, it can transform it in 1/8-stop increases for especially smooth presentation advances. The control ring additionally fills in as a manual center ring, with a switch simply behind it empowering you to change among centering and your picked custom mode.

The control ring moves easily, and just before it is a profound elastic zoom ring, which has a decently coarse completion for good grasp. While this isn’t a L-arrangement focal point, everything feels set up together; the barrel is generally polycarbonate, however the mount is metal, and the rings feel like they’re awesome quality. This isn’t a focal point that will self-destruct at any point in the near future.

Taking into account that this focal point is gone for the voyaging picture taker, however, it’s a disgrace that Canon is making no cases as to climate obstruction. This isn’t something Canon will in general incorporate on its non-L-arrangement optics, however at this sort of value some may anticipate it.


  • Fast and near-silent autofocusing
  • Very effective image stabilization system
  • Moderate distortion at both ends of the zoom range

Group asserts the RF 24-240mm f/4-6.3 IS USM offers close quiet self-adjust; sure enough there’s simply the faintest murmur as the focal point centers, and it figures out how to move both expediently and easily as it works. Centering advances during video recording are quick and watchful as well.

Sharpness is commonly excellent all through the zoom run, in spite of the fact that pictures will in general be milder at the more extensive end than at fax lengths, where things looks especially ruddy. You can value the skill of the Image Stabilizer as you shoot, as it steadies the feed inside the viewfinder and LCD, and the five-stop guarantee implies it should keep pictures sharp when taking shots at shade speeds as delayed as around 1/8 sec at the fax extraordinary.

We found that it was surely conceivable to at present end up with acceptably sharp pictures at this screen speed, in spite of the fact that not exactly reliably. Yet, it’s as yet amazing to feel that you can drop to around 1/10 sec or 1/13 sec at most extreme fax and still have a decent difference in getting a sharp shot.


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A considerable measure of vignetting is evident at the fax part of the bargain wide open, yet this decreases as you stop down the focal point, and can be effectively expelled utilizing the in-camera rectification. You can likewise empower revision of diffraction and (sidelong) chromatic variation through the camera’s menus, and you can approach the Digital Lens Optimizer work, which endeavors to counter twists and anything that may bargain sharpness through the entire imaging pipeline.

Vignetting at the telephoto end of the lens is obvious, but it’s easily lifted away with the Peripheral Illumination Correction

That just leaves mutilation amendment, which isn’t accessible for the focal point in-camera, in spite of the fact that it appears that enough is being applied consequently to JPEGs in-camera in any case. That is similarly also, as a decent lot of mutilation can be seen at the two parts of the bargains in crude documents, with enough at the wide-edge end for within the barrel to be plainly unmistakable.

Parallel chromatic abnormality is very clear at the wide-edge end, however again this is effectively managed. Those handling crude records may need to physically expel some increasingly obstinate purple bordering however.


Any focal point this eager will have a bunch of optical abnormalities for clients to think about, and we see all the principle guilty parties somewhat here. In any case, the way that these can to a great extent be dealt with either programmed in-camera redresses or a single tick programming modifications implies they aren’t exactly the issues they may have been before – and any more grounded revision through the optics would mean a trade off as far as size, weight or cost – and maybe every one of the three.


Along these lines, at any rate as far as the optics, the Canon RF 24-240mm f/4-6.3 IS USM carries on much as we’d expect a superzoom of its sort to, and everything else is quite solid; the centering framework is decent and nippy, and the adjustment viable. It’s likewise incredible to see pleasantly sharp outcomes, especially at the fax end, where many will no uncertainty utilize such a focal point with some recurrence. It’s a long way from immaculate, however it’s an invite expansion to the RF extend no different.

About the author

Pro Windroid

A young Tunisian born in 1986 loves the world of technology and technology news and keep up with all the new giants.

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