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
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
RF-S 10-18mm F4.5-6.3 IS STM is 4.6 years newer.
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Wins
RF 24-70mm F2.8L IS USM
Wins
RF-S 10-18mm F4.5-6.3 IS STM
TL;DR — Key differences
- BRF-S 10-18mm F4.5-6.3 IS STM has lower Weight (165 g vs 900 g)
- BRF-S 10-18mm F4.5-6.3 IS STM has lower Length (44.6 mm vs 125 mm)
- ARF 24-70mm F2.8L IS USM has lower Max aperture (Tele) (f/2.8 vs f/6.3)
- ARF 24-70mm F2.8L IS USM has higher Max magnification (0.3 × vs 0.17 ×)
- ARF 24-70mm F2.8L IS USM has lower Max aperture (Wide) (f/2.8 vs f/4.5)
Key specs at a glance
Size and weight, to scale
RF 24-70mm F2.8L IS USM
⌀88 × 125 mm
900 g (1.98 lb / 31.75 oz)
Credit card
85.6 × 54 mm
for scale
RF-S 10-18mm F4.5-6.3 IS STM
⌀69 × 45 mm
165 g (0.36 lb / 5.82 oz)
RF 24-70mm F2.8L IS USM is 80mm longer and 19mm wider than RF-S 10-18mm F4.5-6.3 IS STM.
RF 24-70mm F2.8L IS USM is 735 g heavier than RF-S 10-18mm F4.5-6.3 IS STM.
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 24-70mm F2.8L IS USM
- ✓
Special elements
Adds 3 Aspherical, 3 UD
- ✓
Max aperture (Tele)
f/2.8 vs f/6.3 — lower is better
- ✓
Weather sealing
Only RF 24-70mm F2.8L IS USM supports it
- ✓
Control ring
Only RF 24-70mm F2.8L IS USM supports it
- ✓
Max aperture (Wide)
f/2.8 vs f/4.5 — lower is better
- ✓
OIS effectiveness
5 stops vs 4 stops — higher is better
- ✓
Max magnification
0.3 × vs 0.17 × — higher is better
Reasons to choose the RF-S 10-18mm F4.5-6.3 IS STM
- ✓
Special elements
Adds 1 Aspherical, 1 UD
- ✓
Weight
165 g vs 900 g — lower is better
- ✓
Length
44.6 mm vs 125 mm — lower is better
- ✓
Min focus distance
15 cm vs 21 cm — lower is better
- ✓
Diameter
69.2 mm vs 88 mm — lower is better
Shared specifications
Internal focus
Both support internal focus
Optical stabilization
Both support optical stabilization
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
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
Decided which one is right for you?
Compare live prices for the RF 24-70mm F2.8L IS USM and RF-S 10-18mm F4.5-6.3 IS STM at major authorized retailers.
Canon RF 24-70mm F2.8L IS USM
Canon RF-S 10-18mm F4.5-6.3 IS STM
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.