Canon RF 16-28mm F2.8 IS STM

This Canon wide-angle zoom spans 16–28mm on full-frame RF-mount cameras. Released in 2025 and still in production, it mounts directly on the system's mirrorless bodies.

Its natural subjects are architecture, landscapes, city streets and other wide scenes. Wedding and event photographers also use this span for venue interiors and group spaces. The range runs from a very wide 16mm to a moderate 28mm.

The main trade-off is reach. It stops at 28mm, so portraits, details and everyday shots call for a second lens. In return, you get a fast aperture in a light body.

At 15.7 oz (445 g), this is a light lens for a constant f/2.8 wide zoom. The barrel measures 3.01 in (76.5 mm) across and 3.58 in (91 mm) long, so it stays compact in a bag. A screw-in filter must match the lens's 67mm thread.

At 16mm you can frame a whole room or a sweeping coastline from close in. Zooming to 28mm gives a calmer view that still keeps width for streets and buildings. Between the two, you can adjust composition without stepping back in cramped spaces. That flexibility matters for interiors and tight urban scenes.

The f/2.8 maximum stays constant through the zoom. Your exposure and shutter speed therefore hold as you zoom. The wide aperture also gathers more light for dim churches, evening streets and night skies. Depth of field remains deep at these focal lengths, so the gain is workable shutter speeds rather than blurred backgrounds.

Close focus reaches 0.8 ft (25 cm). You can place a foreground rock, plant or doorway near the camera and still keep the wider scene beyond it. Maximum magnification reaches 0.26x, so a near subject can become a clear feature of the picture.

Nine aperture blades help keep the opening round as you stop down. That helps night highlights, such as distant street lamps, stay evenly shaped.

Image stabilisation steadies the camera for handheld work. In dim interiors, at dusk, or under night street lights, it helps hold shots steady at slower shutter speeds. The steadier view through the finder also makes careful framing easier.

Weather sealing guards against dust and moisture. That suits coastal paths, changeable mountain weather and long days outdoors. A damp morning by the sea is less of a concern.

Two absences stand out. There is no zoom lock, so check the barrel position before shooting. The front element also carries no fluorine coating, so fingerprints and rain drops need routine cleaning.

Focus is internal, so the moving parts stay inside the barrel while you focus. Two aspherical elements help correct distortion, which can bend straight lines at these focal lengths. That matters when walls and doorframes should stay straight in the frame.

Four low-dispersion elements help reduce chromatic aberration, where colours separate into fringes along high-contrast edges. Night scenes with bright lamps are one place those edges appear.