Skip to content
Specdex
Compare now
Canon RF 15-35mm f/2.8L IS USM — Prime/Zoom
Canon

Canon RF 15-35mm f/2.8L IS USM

Prime/Zoom

93
/ 100
From $2,299
VS
Canon RF 15-35mm f/2.8L IS USM wins by 3
Sigma 150-600mm Sports DG OS — Prime/Zoom
Sigma

Sigma 150-600mm Sports DG OS

Prime/Zoom

90
/ 100
From $1,499
Specdex verdict

Canon RF 15-35mm f/2.8L IS USM takes it — here’s why.

In our weighted Specdex score, Canon RF 15-35mm f/2.8L IS USM lands at 93 and Sigma 150-600mm Sports DG OS at 90. That puts Canon RF 15-35mm f/2.8L IS USM ahead by 3 points — a narrow margin driven mostly by its strengths in the categories below.

Pick Canon RF 15-35mm f/2.8L IS USM if…

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

Pick Sigma 150-600mm Sports DG OS if…

  • ✓Fast aperture
  • ✓Quiet autofocus
  • ✓Weather-sealed (most)
Share this comparison: Share to Reddit X / Twitter

Winner by scenario

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

Sharpness

Canon RF 15-35mm f/2.8L IS USM

Compared on the sharpness sub-score

Canon RF 15-35mm f/2.8L IS USM leads on sharpness (93 vs 90).

Build

Canon RF 15-35mm f/2.8L IS USM

Compared on the build sub-score

Canon RF 15-35mm f/2.8L IS USM leads on build (94 vs 88).

Autofocus

Canon RF 15-35mm f/2.8L IS USM

Compared on the autofocus sub-score

Canon RF 15-35mm f/2.8L IS USM leads on af (92 vs 88).

Value for money

Sigma 150-600mm Sports DG OS

Specdex score per dollar at MSRP

Sigma 150-600mm Sports DG OS more score per dollar ($1,499 vs $2,299).

Canon RF 15-35mm f/2.8L IS USM 93
vs
90 Sigma 150-600mm Sports DG OS

Score breakdown

Canon RF 15-35mm f/2.8L IS USM
93
sharpness 93
af 92
build 94
value 84
Sigma 150-600mm Sports DG OS
90
sharpness 90
af 88
build 88
value 85

Specs side-by-side

Canon RF 15-35mm f/2.8L IS USM versus Sigma 150-600mm Sports DG OS — full spec comparison
Spec Canon RF 15-35mm f/2.8L IS USM Sigma 150-600mm Sports DG OS

Canon RF 15-35mm f/2.8L IS USM

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

Sigma 150-600mm Sports DG OS

Pros
  • +Fast aperture
  • +Quiet autofocus
  • +Weather-sealed (most)
Cons
  • −Mount-specific
  • −Weight varies
  • −Price scales with quality

FAQ: Canon RF 15-35mm f/2.8L IS USM vs Sigma 150-600mm Sports DG OS

Which is better, Canon RF 15-35mm f/2.8L IS USM or Sigma 150-600mm Sports DG OS? +

Canon RF 15-35mm f/2.8L IS USM scores 93 on our weighted rubric — ahead by 3. Your best pick depends on the sub-scores above.

Is Canon RF 15-35mm f/2.8L IS USM worth the price? +

At $2,299, Canon RF 15-35mm f/2.8L IS USM delivers a Specdex score of 93 — strongest in build.

Is Sigma 150-600mm Sports DG OS worth the price? +

At $1,499, Sigma 150-600mm Sports DG OS delivers a Specdex score of 90 — strongest in sharpness.

Does Canon RF 15-35mm f/2.8L IS USM or Sigma 150-600mm Sports DG OS 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 sharpness, Canon RF 15-35mm f/2.8L IS USM or Sigma 150-600mm Sports DG OS? +

Canon RF 15-35mm f/2.8L IS USM — leads on sharpness (93 vs 90). Compared on the sharpness sub-score.

Which is better for build, Canon RF 15-35mm f/2.8L IS USM or Sigma 150-600mm Sports DG OS? +

Canon RF 15-35mm f/2.8L IS USM — leads on build (94 vs 88). Compared on the build sub-score.