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Sony FE 100-400mm f/4.5-5.6 GM OSS — Prime/Zoom
Sony

Sony FE 100-400mm f/4.5-5.6 GM OSS

Prime/Zoom

93
/ 100
From $2,498
VS
Canon RF 28-70mm f/2L USM wins by 3
Canon RF 28-70mm f/2L USM — Prime/Zoom
Canon

Canon RF 28-70mm f/2L USM

Prime/Zoom

96
/ 100
From $2,999
Specdex verdict

Canon RF 28-70mm f/2L USM takes it — here’s why.

In our weighted Specdex score, Sony FE 100-400mm f/4.5-5.6 GM OSS lands at 93 and Canon RF 28-70mm f/2L USM at 96. That puts Canon RF 28-70mm f/2L USM ahead by 3 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Sony FE 100-400mm f/4.5-5.6 GM OSS if…

  • ✓Fast autofocus
  • ✓Weather-sealed
  • ✓Premium optics

Pick Canon RF 28-70mm f/2L USM if…

  • ✓Fast autofocus
  • ✓Weather-sealed
  • ✓Premium optics
Sony FE 100-400mm f/4.5-5.6 GM OSS 93
vs
96 Canon RF 28-70mm f/2L USM

Score breakdown

Sony FE 100-400mm f/4.5-5.6 GM OSS
93
sharpness 93
af 92
build 94
value 84
Canon RF 28-70mm f/2L USM
96
sharpness 96
af 95
build 94
value 84

Specs side-by-side

Sony FE 100-400mm f/4.5-5.6 GM OSS versus Canon RF 28-70mm f/2L USM — full spec comparison
Spec Sony FE 100-400mm f/4.5-5.6 GM OSS Canon RF 28-70mm f/2L USM

Sony FE 100-400mm f/4.5-5.6 GM OSS

Pros
  • +Fast autofocus
  • +Weather-sealed
  • +Premium optics
Cons
  • −Heavy
  • −Expensive
  • −Focus breathing varies

Canon RF 28-70mm f/2L USM

Pros
  • +Fast autofocus
  • +Weather-sealed
  • +Premium optics
Cons
  • −Heavy
  • −Expensive
  • −Focus breathing varies

FAQ: Sony FE 100-400mm f/4.5-5.6 GM OSS vs Canon RF 28-70mm f/2L USM

Which is better, Sony FE 100-400mm f/4.5-5.6 GM OSS or Canon RF 28-70mm f/2L USM? +

Canon RF 28-70mm f/2L USM scores 96 on our weighted rubric — ahead by 3. Your best pick depends on the sub-scores above.

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.

Is Canon RF 28-70mm f/2L USM worth the price? +

At $2,999, Canon RF 28-70mm f/2L USM delivers a Specdex score of 96 — strongest in sharpness.

Does Sony FE 100-400mm f/4.5-5.6 GM OSS or Canon RF 28-70mm f/2L USM 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.