Canon
Canon RF 100-500mm f/4.5-7.1L IS USM
Prime/Zoom
93
/ 100
From $2,699
VS
Sony
Sony FE 100-400mm f/4.5-5.6 GM OSS
Prime/Zoom
93
/ 100
From $2,498
Specdex verdict
Dead heat — it comes down to priorities.
In our weighted Specdex score, Canon RF 100-500mm f/4.5-7.1L IS USM lands at 93 and Sony FE 100-400mm f/4.5-5.6 GM OSS at 93. With scores tied, the decision hinges on which sub-scores matter most to you.
Pick Canon RF 100-500mm f/4.5-7.1L IS USM if…
- ✓Fast autofocus
- ✓Weather-sealed
- ✓Premium optics
Pick Sony FE 100-400mm f/4.5-5.6 GM OSS if…
- ✓Fast autofocus
- ✓Weather-sealed
- ✓Premium optics
Canon RF 100-500mm f/4.5-7.1L IS USM 93
vs 93 Sony FE 100-400mm f/4.5-5.6 GM OSS
Score breakdown
Canon RF 100-500mm f/4.5-7.1L IS USM
93 sharpness 93
af 92
build 94
value 84
Sony FE 100-400mm f/4.5-5.6 GM OSS
93 sharpness 93
af 92
build 94
value 84
Specs side-by-side
| Spec | Canon RF 100-500mm f/4.5-7.1L IS USM | Sony FE 100-400mm f/4.5-5.6 GM OSS |
|---|
Canon RF 100-500mm f/4.5-7.1L IS USM
Pros
- +Fast autofocus
- +Weather-sealed
- +Premium optics
Cons
- −Heavy
- −Expensive
- −Focus breathing varies
Sony FE 100-400mm f/4.5-5.6 GM OSS
Pros
- +Fast autofocus
- +Weather-sealed
- +Premium optics
Cons
- −Heavy
- −Expensive
- −Focus breathing varies
FAQ: Canon RF 100-500mm f/4.5-7.1L IS USM vs Sony FE 100-400mm f/4.5-5.6 GM OSS
Which is better, Canon RF 100-500mm f/4.5-7.1L IS USM or Sony FE 100-400mm f/4.5-5.6 GM OSS? +
Both score 93 on our weighted rubric — tied. Your best pick depends on the sub-scores above.
Is Canon RF 100-500mm f/4.5-7.1L IS USM worth the price? +
At $2,699, Canon RF 100-500mm f/4.5-7.1L IS USM delivers a Specdex score of 93 — strongest in build.
Is Sony FE 100-400mm f/4.5-5.6 GM OSS worth the price? +
At $2,498, Sony FE 100-400mm f/4.5-5.6 GM OSS delivers a Specdex score of 93 — strongest in build.
Does Canon RF 100-500mm f/4.5-7.1L IS USM or Sony FE 100-400mm f/4.5-5.6 GM OSS last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.