Canon
RF-S 10-18mm F4.5-6.3 IS STM
Canon RF Mount
RF-S 10-18mm F4.5-6.3 IS STM — 10–18mm f/4.5-6.3 for Canon RF, a popular choice in the canon lineup.
$329
Launch priceReleased Apr 2024
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
RF-S 10-18mm F4.5-6.3 IS STM is 2.7 years newer.
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Wins
RF-S 10-18mm F4.5-6.3 IS STM
Wins
28-75mm F2.8 Di III VXD G2
TL;DR — Key differences
- ARF-S 10-18mm F4.5-6.3 IS STM has higher OIS effectiveness (4 stops vs 0 stops)
- ARF-S 10-18mm F4.5-6.3 IS STM has lower Weight (165 g vs 540 g)
- ARF-S 10-18mm F4.5-6.3 IS STM has lower Length (44.6 mm vs 118 mm)
- B28-75mm F2.8 Di III VXD G2 has lower Max aperture (Tele) (f/2.8 vs f/6.3)
- B28-75mm F2.8 Di III VXD G2 has higher Max magnification (0.37 × vs 0.17 ×)
Key specs at a glance
Size and weight, to scale
RF-S 10-18mm F4.5-6.3 IS STM
⌀69 × 45 mm
165 g (0.36 lb / 5.82 oz)
Credit card
85.6 × 54 mm
for scale
28-75mm F2.8 Di III VXD G2
⌀76 × 118 mm
540 g (1.19 lb / 19.05 oz)
RF-S 10-18mm F4.5-6.3 IS STM is 73mm shorter and 7mm narrower than 28-75mm F2.8 Di III VXD G2.
RF-S 10-18mm F4.5-6.3 IS STM is 375 g lighter than 28-75mm F2.8 Di III VXD G2.
Diameter (⌀) is the maximum barrel width; length is measured from the mount to the front of the lens.
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-S 10-18mm F4.5-6.3 IS STM
- ✓
Special elements
Adds 1 Aspherical, 1 UD
- ✓
OIS effectiveness
4 stops vs 0 stops — higher is better
- ✓
Weight
165 g vs 540 g — lower is better
- ✓
Length
44.6 mm vs 118 mm — lower is better
- ✓
Optical stabilization
Only RF-S 10-18mm F4.5-6.3 IS STM supports it
- ✓
Min focus distance
15 cm vs 18 cm — lower is better
- ✓
Diameter
69.2 mm vs 76 mm — lower is better
Reasons to choose the 28-75mm F2.8 Di III VXD G2
- ✓
Special elements
Adds 2 LD, 2 GM
- ✓
Max aperture (Tele)
f/2.8 vs f/6.3 — lower is better
- ✓
Weather sealing
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
- ✓
Max aperture (Wide)
f/2.8 vs f/4.5 — lower is better
- ✓
Max magnification
0.37 × vs 0.17 × — higher is better
Shared specifications
Internal focus
Both support internal focus
Pros & cons at a glance
Editorially curated highlights and trade-offs.
RF-S 10-18mm F4.5-6.3 IS STM
Pros
- ✓Versatile zoom range covers multiple focal lengths in one lens
- ✓Built-in optical image stabilization
- ✓Lightweight design easy to carry all day
Cons
- –Slower maximum aperture limits low-light performance
- –Third-party or older alternatives may offer better value
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-S 10-18mm F4.5-6.3 IS STM and 28-75mm F2.8 Di III VXD G2 at major authorized retailers.
Canon RF-S 10-18mm F4.5-6.3 IS STM
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 June 2026.