Canon
RF 135mm F1.8 L IS USM
Canon RF Mount
RF 135mm F1.8 L IS USM — 135mm f/1.8 for Canon RF, a popular choice in the canon lineup.
$2,099
Launch priceReleased Aug 2023
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
RF 135mm F1.8 L IS USM is 4.7 years newer.
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Wins
RF 135mm F1.8 L IS USM
Wins
RF 35mm F1.2 L USM
1 categories tied
Which would you choose?
TL;DR — Key differences
- ARF 135mm F1.8 L IS USM has higher OIS effectiveness (5.5 stops vs 0 stops)
- ARF 135mm F1.8 L IS USM has higher Max magnification (0.29 × vs 0.17 ×)
- BRF 35mm F1.2 L USM has lower Max aperture (Wide) (f/1.2 vs f/1.8)
- BRF 35mm F1.2 L USM has lower Max aperture (Tele) (f/1.2 vs f/1.8)
- BRF 35mm F1.2 L USM has lower Min focus distance (50 cm vs 70 cm)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareRF 135mm F1.8 L IS USM
⌀89 × 130 mm
935 g (2.06 lb / 32.98 oz)
Credit card
85.6 × 54 mm
for scale
RF 35mm F1.2 L USM
⌀89 × 112 mm
950 g (2.09 lb / 33.51 oz)
RF 135mm F1.8 L IS USM is 19mm longer than RF 35mm F1.2 L USM.
RF 135mm F1.8 L IS USM is 15 g lighter than RF 35mm F1.2 L USM.
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 135mm F1.8 L IS USM
- ✓
OIS effectiveness
5.5 stops vs 0 stops — higher is better
- ✓
Special elements
Adds 1 Aspherical
- ✓
Optical stabilization
Only RF 135mm F1.8 L IS USM supports it
- ✓
Max magnification
0.29 × vs 0.17 × — higher is better
- ✓
Weight
935 g vs 950 g — lower is better
Reasons to choose the RF 35mm F1.2 L USM
- ✓
Special elements
Adds 3 Aspherical
- ✓
Max aperture (Wide)
f/1.2 vs f/1.8 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/1.8 — lower is better
- ✓
Min focus distance
50 cm vs 70 cm — lower is better
- ✓
Length
111.5 mm vs 130.4 mm — lower is better
Shared specifications
Internal focus
Both support internal focus
Diameter
Both 89 mm
Weather sealing
Both support weather sealing
Control ring
Both support control ring
Custom function button
Both support custom function button
Pros & cons at a glance
Editorially curated highlights and trade-offs.
RF 135mm F1.8 L IS USM
Pros
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Built-in optical image stabilization
- ✓Weather-sealed construction for outdoor shooting
Cons
- –Premium price point
- –Relatively heavy for extended handheld use
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
Decided which one is right for you?
Compare live prices for the RF 135mm F1.8 L IS USM and RF 35mm F1.2 L USM at major authorized retailers.
Canon RF 135mm F1.8 L IS USM
Canon RF 35mm F1.2 L USM
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.