Canon’s ultra-wide zoom lens for mirrorless blows its DSLR equivalent out the water

Canon has announced its widest-ever rectilinear zoom lens with autofocus, the RF 10-20mm F4 L IS STM, and it looks like one hell of a lens. 

Think of the RF 10-20mm – the world’s widest zoom lens with autofocus – as the mirrorless equivalent of the Canon EF 11-24mm f/4 L USM for DSLRs, which is a stable for professional architecture, interior and landscape photographers, only it’s a radically different design that showcases what’s possible for mirrorless vs DSLR. 

Like the 11-24mm F4 DSLR stalwart, the RF 10-20mm F4 is a rectilinear ultra-wide angle, which means straight lines are kept straight throughout the entire frame instead of barrel distortion which is a usual trait of fisheye and other wide angle lenses. Rectilinear design is a minimum requirement that pro architecture and interior photographers in particular expect from a wide angle lens, and if you keep the lens is parallel to your subjects, perspective distortion will be controlled, too.

Canon RF 10-20mm F4 L IS STM lens on a white background

(Image credit: Canon)

Impressively, the new RF 10-20mm F4 weighs a mere 20.1oz / 570g – that’s less than half the weight of the 11-24mm F4 DSLR stalwart, which is a whopping 41.6oz / 1,180g, and becomes the lightest F4 zoom lens in Canon’s line up. It’s a staggering difference, I can’t think of such a stark contrast between a mirrorless and DSLR lens design.

Canon RF 10-20mm F4 L IS STM: Price and availability

This is Canon and so naturally the RF 10-20mm F4 is pricy. However, its jaw dropping list price – at least for a F4 lens – is $2,299 / £2579.99 (I’ll update this page with Australia pricing when that information becomes available). The lens is available from October 2023. 

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This post originally appeared on TechToday.

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