Canon RF 100-400mm F5.6-8 IS USM vs Canon RF 100-500mm F4.5-7.1L IS USM
Every published spec side by side, with today's lowest prices for the market you've chosen.
Key differences
- Maximum aperture: f/4.5–7.1 on the RF 100-500mm F4.5-7.1L IS USM, against f/5.6–8 on the RF 100-400mm F5.6-8 IS USM.
- Closest focus: 0.90 m on the RF 100-500mm F4.5-7.1L IS USM, against 1.20 m on the RF 100-400mm F5.6-8 IS USM.
- Max magnification: 0.41× on the RF 100-400mm F5.6-8 IS USM, against 0.33× on the RF 100-500mm F4.5-7.1L IS USM.
- Weather sealed: Yes on the RF 100-500mm F4.5-7.1L IS USM, against No on the RF 100-400mm F5.6-8 IS USM.
- Weight: 635 g on the RF 100-400mm F5.6-8 IS USM, against 1,370 g on the RF 100-500mm F4.5-7.1L IS USM.
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|---|---|---|
| Lowest price today | $749.99 new | $2,899 new |
| Optics | ||
| Focal length | 100–400mm | 100–500mm |
| 35mm equivalent | 100–400mm (full frame) | 100–500mm (full frame) |
| Maximum apertureLower f-number lets in more light. A zoom wins only when it is as bright at both ends. | f/5.6–8 | f/4.5–7.1 (best) |
| Minimum aperture | f/32 | f/32 |
| Made for | Full frame | Full frame |
| Elements / groups | 12 / 9 | 20 / 14 |
| Aperture blades | 9 | 9 |
| Closest focus | 1.20 m | 0.90 m (best) |
| Max magnification | 0.41× (best) | 0.33× |
| Focus & handling | ||
| Autofocus | Yes (Nano USM) | Yes (Dual Nano USM) |
| Optical stabilisation | Yes | Yes |
| Weather sealed | No | Yes (best) |
| Internal zoom | — | No |
| Aperture ring | No | No |
| Teleconverter compatible | Yes | Yes |
| Size & weight | ||
| Weight | 635 g (best) | 1,370 g |
| Diameter × length | 79.5 × 164.7 mm | 93.8 × 207.6 mm |
| Filter thread | 67 mm | 77 mm |
Green marks the better figure where “better” is unambiguous. A dash means the maker doesn't publish it or we haven't verified it yet.

