What filter size does the Canon RF 15-35mm f/2.8 L IS USM take?

The Canon RF 15-35mm f/2.8 L IS USM takes 82mm screw-in filters — its front filter thread is 82mm. Any standard 82mm UV, polarizer or ND filter screws straight on.

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Canon RF lenses that share the 82mm thread

Buy one good set of 82mm filters and it also fits:

• Canon RF 135mm f/1.8 L IS USM — 135mm f/1.8
• Canon RF 24-70mm f/2.8 L IS USM — 24-70mm f/2.8
• Canon RF 600mm f/11 IS STM — 600mm f/11
• Canon RF 85mm f/1.2 L USM — 85mm f/1.2

Screw-in filters are mount-agnostic — 7 verified lenses on other mounts also take 82mm: see every 82mm lens.

A step-up ring also lets a 82mm lens use one size-larger filters, which is how many photographers standardize a single filter set across lenses.

All 82mm lenses: the 82mm hub · every covered lens: filter sizes index · this lens on Amazon: Canon RF 15-35mm f/2.8 L IS USM

Thread sizes verified 2026-08-28 against community-maintained per-mount lens specification tables (compiled from the manufacturers' own spec sheets), matched brand-strictly to our lens index. Lenses whose thread we could not uniquely verify are left out rather than guessed — coverage grows as verified data lands.