Canon
RF 70-200mm F2.8L IS USM
Canon RF Mount
An incredibly compact, extending telephoto zoom with L-series optics and 5 stops of stabilization.
$2,799
Launch priceReleased Oct 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 1.8 years newer.
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Wins
RF 70-200mm F2.8L IS USM
Wins
28-75mm F2.8 Di III VXD G2
2 categories tied
TL;DR — Key differences
- ARF 70-200mm F2.8L IS USM has higher OIS effectiveness (5 stops vs 0 stops)
- B28-75mm F2.8 Di III VXD G2 has lower Min focus distance (18 cm vs 70 cm)
- B28-75mm F2.8 Di III VXD G2 has lower Weight (540 g vs 1070 g)
- B28-75mm F2.8 Di III VXD G2 has higher Max magnification (0.37 × vs 0.23 ×)
- B28-75mm F2.8 Di III VXD G2 has lower Length (118 mm vs 146 mm)
Key specs at a glance
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
The verdict
2.8 Di III VXD G2 if you prioritize portability and close-up versatility for everyday street or travel photography. It benefits from a lightweight 540g build and a significantly shorter 18cm minimum focus distance. (36 words)
Total: 19 + 38 + 36 = 93 words.
Check: "exactly 3 short paragraphs (use \n\n between paragraphs)". Yes. Check: "no markdown". Yes. Check: "no filler". Yes. Check: "90-115 words". Yes (93). Check: "hard cap 120". Yes.
Wait, "F2.8" vs "F2.8L". Canon: Canon RF 70-200mm F2.8L IS USM Tamron: Tamron 28-75mm F2.8 Di III VXD G2 Correct.
Wait, "1 Super UD", "1 UD", "2 Aspherical" etc. are in specs but I didn't use them. That's fine, I used other specs. "Dual Nano USM" vs "VXD Linear Motor". "Internal focus: false" for Canon, "true" for Tamron. "Max magnification: 0.23" vs "0.37".
Why pick one over the other
Reasons to choose the RF 70-200mm F2.8L IS USM
- ✓
Special elements
Adds 1 Super UD, 1 UD, 2 Aspherical
- ✓
OIS effectiveness
5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only RF 70-200mm F2.8L IS USM supports it
- ✓
Control ring
Only RF 70-200mm 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
- ✓
Min focus distance
18 cm vs 70 cm — lower is better
- ✓
Internal focus
Only 28-75mm F2.8 Di III VXD G2 supports it
- ✓
Custom function button
Only 28-75mm F2.8 Di III VXD G2 supports it
- ✓
Weight
540 g vs 1070 g — lower is better
- ✓
Length
118 mm vs 146 mm — lower is better
- ✓
Diameter
76 mm vs 90 mm — lower is better
- ✓
Max magnification
0.37 × vs 0.23 × — higher is better
Shared specifications
Max aperture (Wide)
Both f/2.8
Max aperture (Tele)
Both f/2.8
Weather sealing
Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
RF 70-200mm F2.8L IS USM
Pros
- ✓Unbelievably compact storage size thanks to extending barrel
- ✓Very lightweight design (only 1070g)
- ✓Excellent center sharpness at all focal lengths
- ✓Dual Nano USM focus motors offer fast, silent AF
- ✓Exceptional 5-stop optical image stabilization
Cons
- –Extending barrel can draw in dust/moisture over time
- –Not compatible with RF teleconverters (due to rear element position)
- –Vignetting is quite heavy wide open
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 70-200mm F2.8L IS USM and 28-75mm F2.8 Di III VXD G2 at major authorized retailers.
Canon RF 70-200mm 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.