Canon · RF · zoom
RF 100–400mm F5.6–8 IS USM
Get closer to the wildlife out there.
Best for
What works well
- 400mm reach for distant subjects
- 635g is manageable for a long telephoto zoom
- Optical stabilization and Nano USM autofocus
The tradeoffs
- f/8 at 400mm needs good light for moving subjects
- Too tight for an everyday all-purpose lens
- Stabilization does not freeze subject movement
The useful details
- Mount / coverage
- Canon RF mount · full-frame coverage
- Lens type
- Zoom
- Focal length
- 100–400mm
- Maximum aperture
- f/5.6–8
- Optical stabilization
- Yes
- Weight
- 635g
Will it fit my camera?
Fits both full-frame and APS-C Canon EOS R cameras directly. On APS-C, the view is narrower: multiply the focal length by 1.6 for the full-frame equivalent angle of view.
Not for Canon EF, EF-M or DSLR camera bodies.
Specifications and price: Canon’s product page ↗. Price is an estimate, not a live quote. Availability still needs review before publishing.
Suitability scores and explanations are editorial judgments, not Canon ratings or firsthand test results. Product photographs are omitted until reuse rights are confirmed.