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Canon RF 24-70mm f/2.8 L IS USM — L-series zoom · 5-stop IS · Weather-sealed
Canon

Canon RF 24-70mm f/2.8 L IS USM

L-series zoom · 5-stop IS · Weather-sealed

95
/ 100
From $2,299
VS
Sony FE 135mm f/1.8 GM — Prime/Zoom
Sony

Sony FE 135mm f/1.8 GM

Prime/Zoom

95
/ 100
From $2,098
Specdex verdict

Dead heat — it comes down to priorities.

In our weighted Specdex score, Canon RF 24-70mm f/2.8 L IS USM lands at 95 and Sony FE 135mm f/1.8 GM at 95. With scores tied, the decision hinges on which sub-scores matter most to you.

Pick Canon RF 24-70mm f/2.8 L IS USM if…

  • ✓Sharp corner-to-corner
  • ✓5-stop in-lens stabilization
  • ✓Weather-sealed L-series build

Pick Sony FE 135mm f/1.8 GM if…

  • ✓Fast autofocus
  • ✓Weather-sealed
  • ✓Premium optics
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

Sharpness

Tie

Compared on the sharpness sub-score

Effectively tied — neither pulls a 2-point weighted lead.

Autofocus

Canon RF 24-70mm f/2.8 L IS USM

Compared on the autofocus sub-score

Canon RF 24-70mm f/2.8 L IS USM leads on af (96 vs 94).

Build

Canon RF 24-70mm f/2.8 L IS USM

Compared on the build sub-score

Canon RF 24-70mm f/2.8 L IS USM leads on build (96 vs 94).

Value for money

Tie

Specdex score per dollar at MSRP

Effectively tied — similar score-per-dollar at MSRP.

Canon RF 24-70mm f/2.8 L IS USM 95
vs
95 Sony FE 135mm f/1.8 GM

Score breakdown

Canon RF 24-70mm f/2.8 L IS USM
95
sharpness 96
af 96
build 96
stabilization 95
value 80
Sony FE 135mm f/1.8 GM
95
sharpness 95
af 94
build 94
stabilization 0
value 84

Specs side-by-side

Canon RF 24-70mm f/2.8 L IS USM versus Sony FE 135mm f/1.8 GM — full spec comparison
Spec Canon RF 24-70mm f/2.8 L IS USM Sony FE 135mm f/1.8 GM
Mount
Canon RF
—
Focal length
24-70 mm
—
Aperture
f/2.8 to f/22
—
Construction
21 elements / 15 groups
—
Stabilization
5 stops
—
Min focus
0.21 m
—
Filter
82 mm
—
Weight
900 g
—

Canon RF 24-70mm f/2.8 L IS USM

Pros
  • +Sharp corner-to-corner
  • +5-stop in-lens stabilization
  • +Weather-sealed L-series build
Cons
  • −Premium pricing
  • −Heavier than DSLR predecessor
  • −Variable rear element

Sony FE 135mm f/1.8 GM

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

FAQ: Canon RF 24-70mm f/2.8 L IS USM vs Sony FE 135mm f/1.8 GM

Which is better, Canon RF 24-70mm f/2.8 L IS USM or Sony FE 135mm f/1.8 GM? +

Both score 95 on our weighted rubric — tied. Your best pick depends on the sub-scores above.

Is Canon RF 24-70mm f/2.8 L IS USM worth the price? +

At $2,299, Canon RF 24-70mm f/2.8 L IS USM delivers a Specdex score of 95 — strongest in sharpness.

Is Sony FE 135mm f/1.8 GM worth the price? +

At $2,098, Sony FE 135mm f/1.8 GM delivers a Specdex score of 95 — strongest in sharpness.

Does Canon RF 24-70mm f/2.8 L IS USM or Sony FE 135mm f/1.8 GM 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.

Which is better for autofocus, Canon RF 24-70mm f/2.8 L IS USM or Sony FE 135mm f/1.8 GM? +

Canon RF 24-70mm f/2.8 L IS USM — leads on af (96 vs 94). Compared on the autofocus sub-score.

Which is better for build, Canon RF 24-70mm f/2.8 L IS USM or Sony FE 135mm f/1.8 GM? +

Canon RF 24-70mm f/2.8 L IS USM — leads on build (96 vs 94). Compared on the build sub-score.