Compare lenses
Canon EF 100-400mm f/4.5-5.6L IS II USM vs Canon EF 75-300mm f/4-5.6 III
The Canon EF 100-400mm f/4.5-5.6L IS II USM and the Canon EF 75-300mm f/4-5.6 III side by side, computed from this guide's catalogue.
Which to pick
Pick the Canon EF 100-400mm f/4.5-5.6L IS II USM if you want optical stabilisation, which helps most on bodies without it and more reach (to 400mm equivalent). Pick the Canon EF 75-300mm f/4-5.6 III if you want a brighter f/4 (0.3 stops more light), for dim light and softer backgrounds and a wider view (from 75mm equivalent).
Specs side by side
| Spec | Canon EF 100-400mm f/4.5-5.6L IS II USM | Canon EF 75-300mm f/4-5.6 III |
|---|---|---|
| Maker | Canon | Canon |
| Focal length | 100-400mm (zoom) | 75-300mm (zoom) |
| Full-frame equivalent | 100-400mm | 75-300mm |
| Maximum aperture | f/4.5-5.6 | f/4-5.6brighter |
| Made for | Full frame | Full frame |
| Mounts | Canon EF | Canon EF |
| Stabilised | yesstabilised | no |
| Autofocus | yes | yes |
| Zoom range | 4.0× | 4.0× |
| Cameras it fits | 22 in this guide | 22 in this guide |
Focal range, in full-frame terms
Aperture
Each opening drawn to scale against f/1.4: a smaller f-number lets in more light and blurs the background more.
Field of view
Cameras they fit
22 cameras in this guide take both, so either works on the same body.
Canon EF 100-400mm f/4.5-5.6L IS II USM
- Canon EOS-1D X Mark III
- Canon EOS 850D
- Canon EOS 250D
- Canon EOS 90D
- Canon EOS 2000D
- Canon EOS 4000D
- Canon EOS 6D Mark II
- Canon EOS 200D
- Canon EOS 77D
- Canon EOS 800D