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

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

Prime/Zoom

94
/ 100
From $2,299
VS
Canon RF 24-70mm f/2.8L IS USM wins by 3
Tamron 28-75mm f/2.8 Di III VXD G2 — Sony E · f/2.8 · 540g · $899
Tamron

Tamron 28-75mm f/2.8 Di III VXD G2

Sony E · f/2.8 · 540g · $899

91
/ 100
From $899
Specdex verdict

Canon RF 24-70mm f/2.8L IS USM takes it — here’s why.

In our weighted Specdex score, Canon RF 24-70mm f/2.8L IS USM lands at 94 and Tamron 28-75mm f/2.8 Di III VXD G2 at 91. That puts Canon RF 24-70mm f/2.8L IS USM ahead by 3 points — a narrow margin driven mostly by its strengths in the categories below.

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

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

Pick Tamron 28-75mm f/2.8 Di III VXD G2 if…

  • ✓540g — lightest f/2.8 24-70 alternative
  • ✓Better than first-party G Master at $899
  • ✓Quiet VXD AF motor
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Winner by scenario

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

Sharpness

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

Compared on the sharpness sub-score

Canon RF 24-70mm f/2.8L IS USM leads on sharpness (94 vs 92).

Autofocus

Tie

Compared on the autofocus sub-score

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

Build

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

Compared on the build sub-score

Canon RF 24-70mm f/2.8L IS USM leads on build (94 vs 88).

Value for money

Tamron 28-75mm f/2.8 Di III VXD G2

Specdex score per dollar at MSRP

Tamron 28-75mm f/2.8 Di III VXD G2 more score per dollar ($899 vs $2,299).

Canon RF 24-70mm f/2.8L IS USM 94
vs
91 Tamron 28-75mm f/2.8 Di III VXD G2

Score breakdown

Canon RF 24-70mm f/2.8L IS USM
94
sharpness 94
af 93
build 94
value 84
Tamron 28-75mm f/2.8 Di III VXD G2
91
sharpness 92
af 92
build 88
value 96

Specs side-by-side

Canon RF 24-70mm f/2.8L IS USM versus Tamron 28-75mm f/2.8 Di III VXD G2 — full spec comparison
Spec Canon RF 24-70mm f/2.8L IS USM Tamron 28-75mm f/2.8 Di III VXD G2
Mount
—
Sony E
Focal length
—
28-75 mm
Aperture
—
f/2.8
Construction
—
17 elements / 15 groups
Min focus
—
0.18 m
Filter
—
67 mm
Weight
—
540 g

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

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

Tamron 28-75mm f/2.8 Di III VXD G2

Pros
  • +540g — lightest f/2.8 24-70 alternative
  • +Better than first-party G Master at $899
  • +Quiet VXD AF motor
Cons
  • −28mm wide-end vs 24mm of Sony GM
  • −No image stabilization
  • −No fluorine front coating

FAQ: Canon RF 24-70mm f/2.8L IS USM vs Tamron 28-75mm f/2.8 Di III VXD G2

Which is better, Canon RF 24-70mm f/2.8L IS USM or Tamron 28-75mm f/2.8 Di III VXD G2? +

Canon RF 24-70mm f/2.8L IS USM scores 94 on our weighted rubric — ahead by 3. Your best pick depends on the sub-scores above.

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

At $2,299, Canon RF 24-70mm f/2.8L IS USM delivers a Specdex score of 94 — strongest in sharpness.

Is Tamron 28-75mm f/2.8 Di III VXD G2 worth the price? +

At $899, Tamron 28-75mm f/2.8 Di III VXD G2 delivers a Specdex score of 91 — strongest in value.

Does Canon RF 24-70mm f/2.8L IS USM or Tamron 28-75mm f/2.8 Di III VXD G2 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 24-70mm f/2.8L IS USM or Tamron 28-75mm f/2.8 Di III VXD G2? +

Canon RF 24-70mm f/2.8L IS USM — leads on sharpness (94 vs 92). Compared on the sharpness sub-score.

Which is better for build, Canon RF 24-70mm f/2.8L IS USM or Tamron 28-75mm f/2.8 Di III VXD G2? +

Canon RF 24-70mm f/2.8L IS USM — leads on build (94 vs 88). Compared on the build sub-score.