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Canon RF 100-400mm
The cheap, light Canon mirrorless reach.
Our verdict
Synthesized from public specs and 414 buyer mentions. We research and analyze — we don't lab-test.
Canon EOS R shooters wanting a light 1.8-lb 100-400mm telephoto for travel and handheld birding.
You shoot dawn, dusk, or deep shade; the slow f/5.6-8 aperture struggles in low light.
- Quality
- Value for money
- Image Quality
- Weight
- Low Light Performance
- Zoom Range
- Autofocus
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Our published method blends real owner satisfaction with in-category value. No hidden math.
Specifications
- Type
- Telephoto zoom lens
- Compatibility
- Canon RF (EOS R)
- Key spec
- 100-400mm f/5.6-8
- Weight
- 1.8 lb
- Best for
- Lightweight travel telephoto
Specs from the manufacturer listing and public product data; confirm the current listing before buying.
Manufacturer's claims (from Canon)Show
- Compact, lightweight and high-image quality RF tele zoom lens, with a versatile zoom range of 100-400mm
- Optical Image Stabilizer with up to 5.5 Stops of shake correction
- Up to 6 stops of shake correction when paired with EOS R series cameras featuring In-Body Image Stabilizer (IBIS)
- Minimum focusing distance of 2.89 feet at 200mm and maximum magnification of 0.41x at 400mm
- High speed, smooth and quiet autofocus with Canon’s Nano USM
Marketing copy as listed by the manufacturer — not our assessment.

