Canon RF16mm F2.8 STM Lens | Mirrorless Ultra Wide-Angle, Fixed Focal Length Lens, Compatible with EOS R Series Mirrorless Cameras

Product overview

Canon RF 16mm F2.8 STM: What to Know

Sixteen millimetres on full frame is genuinely wide, wide enough that composition changes rather than just widens: foreground objects loom, interiors open up and a ceiling or a sky becomes part of the frame whether you wanted it or not. Canon describes this as its first ultra wide-angle fixed focal length RF lens, and at f/2.8 it is bright for the category, which matters because ultra-wide work is disproportionately indoors, at night, and in astrophotography where every stop counts.

The close focusing is the feature people underestimate. A minimum focusing distance of 5.11 inches with a maximum magnification of 0.26x means you can put the lens almost against a foreground subject while keeping the whole background in frame, which is the exaggerated-perspective look that ultra-wide lenses do and nothing else can. On a standard zoom the same composition is impossible.

Two practical advantages follow from its size. It is supremely lightweight and compact for a full-frame ultra-wide, which is Canon's own framing and is unusual for the category, where ultra-wides are normally bulbous. And the 43mm filter thread is the same as the RF 50mm F1.8, so if you own both primes, one set of filters covers both. For anyone buying into RF on a budget, those two lenses plus one filter kit is a coherent and cheap starting system.

The things to know: Canon lists no optical stabilisation here, so handheld low-light again depends on body IBIS, and an f/2.8 ultra-wide prime is a specialist rather than a general lens. On an APS-C body it behaves like roughly a 26mm, which is a useful everyday wide rather than an ultra-wide, so the character of the lens changes completely depending on the body.

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