Canon RF 24-240mm F4-6.3 IS USM Review

Quick Summary

The RF 24-240mm F4-6.3 IS USM is a 10x superzoom from Canon for its RF-mount mirrorless cameras. It takes you from a wide 24 mm view to a long 240 mm reach without a lens change, which is the whole reason to buy it. The compromises are a dim aperture at the long end and a weight of 750 g, which is heavy for a travel lens. It sits in the premium price band, so it makes sense when convenience matters more than speed.

Design & Build Quality

This is a substantial lens. At 750 g and about 122 mm long, it feels more like a small telephoto than a pocketable walk-around zoom. On a light mirrorless body the combination becomes front-heavy, and you notice it after a few hours of carrying the camera on a strap.

The barrel is 80.4 mm wide and takes a 72 mm filter, a size that is easy to find in Indian camera shops. Canon's India specification page does not list dust or moisture sealing, so treat it as a lens to protect during the monsoon or on a dusty road trip. The box list names no lens hood, so budget separately for one if you shoot against the light.

Zoom Range & Optical Versatility

The range is the story here. At 24 mm you get a wide view that suits landscapes, interiors and group photos. At 240 mm you can pick out a temple carving, a bird on a wire or a child across the playground. For travel and family events, that is a lot of coverage in one lens, and you will rarely wish you had another one on the camera.

The cost is light. The aperture falls from f/4 at the wide end to f/6.3 when zoomed in, so evening and indoor shots at the long end need a higher ISO or a steadier hand. This is a daylight and travel lens first. Seven aperture blades and a 21-element design aim to keep the image clean across such a long range, but a zoom stretched this far will always be a compromise against a lens that covers a smaller range.

Close focusing is better than you might expect. The 0.50 m minimum distance and 0.26x magnification let you shoot flowers, food and small objects at a respectable size, though this is not a macro lens.

Autofocus & Stabilisation

The Nano USM motor is built for smooth, quiet focusing, which helps video and photographers who like to shoot a quick clip alongside stills. Canon rates the optical stabilisation at up to 5 stops. With a 240 mm reach that matters a great deal, because every small hand movement is magnified. It helps you keep shutter speeds usable when the f/6.3 aperture forces them lower.

A single ring on the barrel can act as a focus ring or as a control ring for exposure settings, so you can adjust aperture, ISO or exposure compensation without taking your eye off the viewfinder.

Features Assessment

The useful features are the long zoom, the stabilisation and the dual-use ring. None of them is flashy, but together they make a practical travel set-up. There is no weather sealing listed and no aperture ring, so the feature list stays modest for a lens at this price. It is a convenience tool, not a performance tool.

Ease of Use

There is very little to learn. Mount the lens, zoom with your hand and let the camera do the focusing. The 10x range removes the need to think about lens choice, which makes it friendly for beginners moving up from a kit zoom. Cleaning is simple because the filter thread is a common size, and a protective filter is cheap to add.

Value for Money

The lens is currently available at about ₹83,699 in India. That is a lot of money for an f/4-6.3 zoom, and you should be clear about what you are paying for: the convenience of one lens, Canon's own stabilisation and focus motor, and the full guarantee of RF-mount compatibility. If you shoot mostly outdoors and travel often, the convenience can justify it. If you shoot in low light or want the sharpest results, the same money buys a faster prime plus a separate telephoto zoom.

Who Should Buy It?

Canon RF-mount owners who travel light on lenses and want a single lens for holidays, family events and wildlife in daylight will get the most from it. It also suits video shooters who like quiet autofocus and a long reach without a lens swap.

Who Should Consider Alternatives?

Photographers who shoot indoors, at night or at events should look at brighter zooms or primes, since f/6.3 at the long end is limiting. Buyers who want a lighter set-up could consider a shorter-range zoom, and those who need dust and moisture protection should look at a sealed lens.