Canon
RF 24-70mm F2.8L IS USM
Canon RF Mount
The cornerstone zoom for Canon mirrorless, featuring 5 stops of optical image stabilization.
$2,399
Launch priceReleased Aug 2019
Tamron
28-75mm F2.8 Di III VXD G2
Sony E Mount
An incredibly popular third-party zoom updated with vastly improved sharpness and autofocus.
$899
Launch priceReleased Aug 2021
28-75mm F2.8 Di III VXD G2 is 1.9 years newer.
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Wins
RF 24-70mm F2.8L IS USM
Wins
28-75mm F2.8 Di III VXD G2
2 categories tied
TL;DR — Key differences
- ARF 24-70mm F2.8L IS USM has higher OIS effectiveness (5 stops vs 0 stops)
- B28-75mm F2.8 Di III VXD G2 has lower Weight (540 g vs 900 g)
- B28-75mm F2.8 Di III VXD G2 has higher Max magnification (0.37 × vs 0.3 ×)
- B28-75mm F2.8 Di III VXD G2 has lower Min focus distance (18 cm vs 21 cm)
- B28-75mm F2.8 Di III VXD G2 has lower Diameter (76 mm vs 88 mm)
Key specs at a glance
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
Why pick one over the other
Reasons to choose the RF 24-70mm F2.8L IS USM
- ✓
Special elements
Adds 3 Aspherical, 3 UD
- ✓
OIS effectiveness
5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only RF 24-70mm F2.8L IS USM supports it
- ✓
Control ring
Only RF 24-70mm F2.8L IS USM supports it
Reasons to choose the 28-75mm F2.8 Di III VXD G2
- ✓
Special elements
Adds 2 LD, 2 GM
- ✓
Custom function button
Only 28-75mm F2.8 Di III VXD G2 supports it
- ✓
Weight
540 g vs 900 g — lower is better
- ✓
Min focus distance
18 cm vs 21 cm — lower is better
- ✓
Diameter
76 mm vs 88 mm — lower is better
- ✓
Max magnification
0.37 × vs 0.3 × — higher is better
- ✓
Length
118 mm vs 125 mm — lower is better
Shared specifications
Max aperture (Wide)
Both f/2.8
Max aperture (Tele)
Both f/2.8
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
RF 24-70mm F2.8L IS USM
Pros
- ✓Built-in optical image stabilization (up to 5 stops)
- ✓Excellent L-series sharpness and build quality
- ✓Fast and silent Nano USM focus motor
- ✓Very low chromatic aberration
Cons
- –Heavier than competitive options (900g)
- –Pricey entry threshold
- –Minor barrel distortion at 24mm
28-75mm F2.8 Di III VXD G2
Pros
- ✓Superb value for money compared to first-party options
- ✓Excellent sharpness throughout the range, even at f/2.8
- ✓Very lightweight and compact (only 540g)
- ✓Fast VXD linear motor focus drive
- ✓Customizable lens functions via Tamron Lens Utility software
Cons
- –Starts at 28mm instead of the wider 24mm standard
- –Slightly weaker corner sharpness at 75mm wide open
- –Weather sealing is basic compared to Sony GM lenses
Decided which one is right for you?
Compare live prices for the RF 24-70mm F2.8L IS USM and 28-75mm F2.8 Di III VXD G2 at major authorized retailers.
Canon RF 24-70mm F2.8L IS USM
Tamron 28-75mm F2.8 Di III VXD G2
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.