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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 3
Nikon Z 180-600mm f/5.6-6.3 VR — Prime/Zoom
Nikon

Nikon Z 180-600mm f/5.6-6.3 VR

Prime/Zoom

90
/ 100
From $1,699
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 Nikon Z 180-600mm f/5.6-6.3 VR 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 Nikon Z 180-600mm f/5.6-6.3 VR if…

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

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

Build

Tie

Compared on the build sub-score

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

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).

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 89).

Value for money

Nikon Z 180-600mm f/5.6-6.3 VR

Specdex score per dollar at MSRP

Nikon Z 180-600mm f/5.6-6.3 VR more score per dollar ($1,699 vs $2,299).

Canon RF 15-35mm f/2.8L IS USM 93
vs
90 Nikon Z 180-600mm f/5.6-6.3 VR

Score breakdown

Canon RF 15-35mm f/2.8L IS USM
93
sharpness 93
af 92
build 94
value 84
Nikon Z 180-600mm f/5.6-6.3 VR
90
sharpness 90
af 89
build 94
value 84

Specs side-by-side

Canon RF 15-35mm f/2.8L IS USM versus Nikon Z 180-600mm f/5.6-6.3 VR — full spec comparison
Spec Canon RF 15-35mm f/2.8L IS USM Nikon Z 180-600mm f/5.6-6.3 VR

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

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

Nikon Z 180-600mm f/5.6-6.3 VR

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

FAQ: Canon RF 15-35mm f/2.8L IS USM vs Nikon Z 180-600mm f/5.6-6.3 VR

Which is better, Canon RF 15-35mm f/2.8L IS USM or Nikon Z 180-600mm f/5.6-6.3 VR? +

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 Nikon Z 180-600mm f/5.6-6.3 VR worth the price? +

At $1,699, Nikon Z 180-600mm f/5.6-6.3 VR delivers a Specdex score of 90 — strongest in build.

Does Canon RF 15-35mm f/2.8L IS USM or Nikon Z 180-600mm f/5.6-6.3 VR 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 Nikon Z 180-600mm f/5.6-6.3 VR? +

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 autofocus, Canon RF 15-35mm f/2.8L IS USM or Nikon Z 180-600mm f/5.6-6.3 VR? +

Canon RF 15-35mm f/2.8L IS USM — leads on af (92 vs 89). Compared on the autofocus sub-score.