Canon
RF 35mm F1.2 L USM
Canon RF Mount
RF 35mm F1.2 L USM — 35mm f/1.2 for Canon RF, a popular choice in the canon lineup.
$2,999
Launch priceReleased Dec 2018
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 5.3 years newer.
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Wins
RF 35mm F1.2 L USM
Wins
RF-S 10-18mm F4.5-6.3 IS STM
1 categories tied
TL;DR — Key differences
- BRF-S 10-18mm F4.5-6.3 IS STM has higher OIS effectiveness (4 stops vs 0 stops)
- BRF-S 10-18mm F4.5-6.3 IS STM has lower Weight (165 g vs 950 g)
- ARF 35mm F1.2 L USM has lower Max aperture (Tele) (f/1.2 vs f/6.3)
- ARF 35mm F1.2 L USM has lower Max aperture (Wide) (f/1.2 vs f/4.5)
- BRF-S 10-18mm F4.5-6.3 IS STM has lower Min focus distance (15 cm vs 50 cm)
Key specs at a glance
Size and weight, to scale
RF 35mm F1.2 L USM
⌀89 × 112 mm
950 g (2.09 lb / 33.51 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 35mm F1.2 L USM is 67mm longer and 20mm wider than RF-S 10-18mm F4.5-6.3 IS STM.
RF 35mm F1.2 L USM is 785 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 35mm F1.2 L USM
- ✓
Max aperture (Tele)
f/1.2 vs f/6.3 — lower is better
- ✓
Max aperture (Wide)
f/1.2 vs f/4.5 — lower is better
- ✓
Special elements
Adds 3 Aspherical
- ✓
Weather sealing
Only RF 35mm F1.2 L USM supports it
- ✓
Control ring
Only RF 35mm F1.2 L USM supports it
- ✓
Custom function button
Only RF 35mm F1.2 L USM supports it
Reasons to choose the RF-S 10-18mm F4.5-6.3 IS STM
- ✓
OIS effectiveness
4 stops vs 0 stops — higher is better
- ✓
Weight
165 g vs 950 g — lower is better
- ✓
Min focus distance
15 cm vs 50 cm — lower is better
- ✓
Length
44.6 mm vs 111.5 mm — lower is better
- ✓
Special elements
Adds 1 Aspherical
- ✓
Optical stabilization
Only RF-S 10-18mm F4.5-6.3 IS STM supports it
- ✓
Diameter
69.2 mm vs 89 mm — lower is better
Shared specifications
Max magnification
Both 0.17 ×
Internal focus
Both support internal focus
Pros & cons at a glance
Editorially curated highlights and trade-offs.
RF 35mm F1.2 L USM
Pros
- ✓Bright f/1.2 aperture for low light and subject separation
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Weather-sealed construction for outdoor shooting
Cons
- –Premium price point
- –Relatively heavy for extended handheld use
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 35mm F1.2 L USM and RF-S 10-18mm F4.5-6.3 IS STM at major authorized retailers.
Canon RF 35mm F1.2 L 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.