Canon RF 15-30mm F4.5-6.3 IS STM Review: The Budget Wide Zoom for Canon Full Frame
The Canon RF 15-30mm F4.5-6.3 IS STM is the cheapest way to go really wide on Canon full frame. Canon announced it on July 12, 2022 at $549.99, alongside the RF 24mm F1.8 Macro, and it weighs 390 grams.
It’s an affordable alternative to Canon’s L-series wide zooms, which cost three or four times as much. You give up a constant aperture and weather sealing, and you get optical stabilization and a lens that fits in a jacket pocket.
A 15mm lens on full frame is for castles, cathedrals and whole city squares, the places you can’t step far enough back from.
Photo: Media Gallery
Christopher Frost tested it on full frame and APS-C bodies.
Video review: Christopher Frost
Design
The optical formula is 13 elements in 11 groups, with two UD elements and a molded aspherical. The aperture has seven blades, and the filter thread is 67mm, so polarizers and ND filters are affordable. Focus uses a lead-screw STM motor.
Canon rates the stabilization at 5.5 stops in Europe and 5 stops in its US material, with up to 7 stops combined with in-body stabilization. Close focus is 28cm in autofocus, but in manual focus at 15mm it goes down to about 13cm for 0.52x magnification, which lets you make dramatic wide close-ups.
There’s a combined focus and control ring with a switch on the side, and a short-throw zoom ring. The lens is slightly longer at 15mm than at 30mm. There’s no weather sealing, and the hood is sold separately.
How it performs
Photography Blog and Digital Camera World found the center very sharp wide open, and Digital Camera World put it close to Canon’s L wide zooms there. The stabilization works well, and autofocus is quick and quiet.
The weaknesses show at the wide end. Barrel distortion and vignetting are heavy at 15mm, and the camera’s corrections can’t be switched off. Amateur Photographer and Photography Blog found the edges soft until you stop down. Digital Camera World saw lateral color fringing toward the edges, though Photography Blog rated it low. And the slow variable aperture limits it after dark.
Who should buy it
Canon full-frame owners on a budget who want a wide zoom for travel, interiors and landscapes. It pairs well with the Canon EOS R8 and R6 Mark II, and works as a 24-48mm equivalent standard zoom on APS-C bodies.
If you want f/2.8, sealing and a lens to match the RF 28-70mm F2.8, the Canon RF 16-28mm F2.8 IS STM costs about twice as much. Going wider takes the RF 10-20mm F4 L. The RF 16mm F2.8 STM prime is smaller and brighter if one focal length is enough.
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