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Product Description
The CANON RF 100‑400 F5.6‑8 IS USM is Canon’s most compact and affordable full‑frame RF telephoto zoom. At just ~635 g and 165 mm long, it offers a flexible 100–400 mm range in a travel‑friendly form. Canon’s Nano USM autofocus delivers fast, smooth and near‑silent focus—perfect for both video and stills. It includes up to 5.5 stops of optical image stabilization, which extends to about 6 stops when paired with IBIS‑equipped EOS R bodies. Close‑focus is outstanding, with a minimum focusing distance of ~2.9 ft at 200 mm and a maximum magnification of ~0.41× at 400 mm. Multi‑element construction (including UD glass and Super Spectra coating) controls aberrations and produces rich, well‑rendered images.
Specifications
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Focal Range: 100–400 mm full‑frame zoom, angle of view approx. 24° to 6°10′.
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Maximum Aperture: f/5.6 at 100 mm narrowing to f/8 at 400 mm; minimum apertures f/32–45.
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Stabilization: Built‑in Optical IS rated up to 5.5 stops; pairs with IBIS on R series for ~6 stops total.
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Autofocus: Nano USM motor combining ring‑type USM and STM for fast, silent, smooth AF with full‑time manual control.
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Close‑Focus Capability: Min. focus ~2.89 ft at 200 mm and maximum magnification ~0.41× at 400 mm.
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Weight & Size: Approximately 635 g and 164.7 mm long—much lighter and shorter than typical 400 mm zooms.
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Optics: 12 elements in 9 groups including UD glass, Super Spectra Coating for color fidelity and aberration control.
Frequently Asked Questions
Yes—the Nano USM system combines ring-type USM and STM for high-speed, near-silent autofocus, ideal for both wildlife photography and video.
You get up to 5.5 stops of lens-based IS, and about 6 stops when paired with an IBIS camera like EOS R5 or R6—great for sharp handheld telephoto images.
At 200 mm the minimum focus distance is ~2.9 ft; at 400 mm you achieve up to ~0.41× magnification—suitable for subjects like birds, small animals, and detail shots.
For portability, affordability and reach it’s outstanding—but if you need constant f/4 and pro-grade construction, an L-series zoom like the RF 100‑500 L may be better.
Definitely—on an R7, it behaves like a 160–640 mm equivalent field-of-view for wildlife reach, with excellent stability and autofocus performance.
