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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 1
Sony FE 14mm f/1.8 GM — Prime/zoom
Sony

Sony FE 14mm f/1.8 GM

Prime/zoom

92
/ 100
From $1,598
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 Sony FE 14mm f/1.8 GM at 92. That puts Canon RF 15-35mm f/2.8L IS USM ahead by 1 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 Sony FE 14mm f/1.8 GM if…

  • ✓Proven optical formula
  • ✓Weather-sealing (L/GM/S)
  • ✓Strong resale
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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.

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 90).

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

Sony FE 14mm f/1.8 GM

Specdex score per dollar at MSRP

Sony FE 14mm f/1.8 GM more score per dollar ($1,598 vs $2,299).

Canon RF 15-35mm f/2.8L IS USM 93
vs
92 Sony FE 14mm f/1.8 GM

Score breakdown

Canon RF 15-35mm f/2.8L IS USM
93
sharpness 93
af 92
build 94
value 84
Sony FE 14mm f/1.8 GM
92
sharpness 92
af 88
build 90
value 86

Specs side-by-side

Canon RF 15-35mm f/2.8L IS USM versus Sony FE 14mm f/1.8 GM — full spec comparison
Spec Canon RF 15-35mm f/2.8L IS USM Sony FE 14mm f/1.8 GM

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

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

Sony FE 14mm f/1.8 GM

Pros
  • +Proven optical formula
  • +Weather-sealing (L/GM/S)
  • +Strong resale
Cons
  • −Mount-specific
  • −Older AF motor on some
  • −Heavier than modern counterparts

FAQ: Canon RF 15-35mm f/2.8L IS USM vs Sony FE 14mm f/1.8 GM

Which is better, Canon RF 15-35mm f/2.8L IS USM or Sony FE 14mm f/1.8 GM? +

Canon RF 15-35mm f/2.8L IS USM scores 93 on our weighted rubric — ahead by 1. 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 Sony FE 14mm f/1.8 GM worth the price? +

At $1,598, Sony FE 14mm f/1.8 GM delivers a Specdex score of 92 — strongest in sharpness.

Does Canon RF 15-35mm f/2.8L IS USM or Sony FE 14mm 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 build, Canon RF 15-35mm f/2.8L IS USM or Sony FE 14mm f/1.8 GM? +

Canon RF 15-35mm f/2.8L IS USM — leads on build (94 vs 90). Compared on the build sub-score.

Which is better for autofocus, Canon RF 15-35mm f/2.8L IS USM or Sony FE 14mm f/1.8 GM? +

Canon RF 15-35mm f/2.8L IS USM — leads on af (92 vs 88). Compared on the autofocus sub-score.