Canon
RF 50mm F1.2L USM
Canon RF Mount
Canon's flagship 50mm f/1.2 prime — extraordinary resolution and creamy bokeh for portraits and low light.
$2,299
Launch priceReleased Dec 2018
Viltrox
AF 13mm F1.4 XF
Fujifilm X Mount
AF 13mm F1.4 XF — 13mm f/1.4 for Fujifilm X, a popular choice in the viltrox lineup.
$429
Launch priceReleased Aug 2023
AF 13mm F1.4 XF is 4.8 years newer.
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Wins
RF 50mm F1.2L USM
Wins
AF 13mm F1.4 XF
1 categories tied
TL;DR — Key differences
- BAF 13mm F1.4 XF has lower Weight (370 g vs 950 g)
- BAF 13mm F1.4 XF has lower Min focus distance (20 cm vs 40 cm)
- ARF 50mm F1.2L USM has higher Max magnification (0.19 × vs 0.1 ×)
- BAF 13mm F1.4 XF has lower Length (74 mm vs 108 mm)
- BAF 13mm F1.4 XF has lower Diameter (74 mm vs 89 mm)
Key specs at a glance
Size and weight, to scale
RF 50mm F1.2L USM
⌀89 × 108 mm
950 g (2.09 lb / 33.51 oz)
Credit card
85.6 × 54 mm
for scale
AF 13mm F1.4 XF
⌀74 × 74 mm
370 g (0.82 lb / 13.05 oz)
RF 50mm F1.2L USM is 34mm longer and 15mm wider than AF 13mm F1.4 XF.
RF 50mm F1.2L USM is 580 g heavier than AF 13mm F1.4 XF.
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 50mm F1.2L USM
- ✓
Special elements
Adds 1 UD, 1 Aspherical
- ✓
Control ring
Only RF 50mm F1.2L USM supports it
- ✓
Max aperture (Wide)
f/1.2 vs f/1.4 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/1.4 — lower is better
- ✓
Max magnification
0.19 × vs 0.1 × — higher is better
Reasons to choose the AF 13mm F1.4 XF
- ✓
Special elements
Adds 2 Aspherical, 2 ED, 2 HR
- ✓
Weight
370 g vs 950 g — lower is better
- ✓
Min focus distance
20 cm vs 40 cm — lower is better
- ✓
Length
74 mm vs 108 mm — lower is better
- ✓
Diameter
74 mm vs 89 mm — lower is better
Shared specifications
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
RF 50mm F1.2L USM
Pros
- ✓Stunning sharpness even wide open at f/1.2
- ✓Beautiful, smooth bokeh with 9 rounded aperture blades
- ✓Fast and accurate Dual Pixel AF with Ring USM
- ✓Weather-sealed L-series construction
Cons
- –Heavy for a 50mm prime (950g)
- –Premium price for a single focal length
- –No optical image stabilization
AF 13mm F1.4 XF
Pros
- ✓Bright f/1.4 aperture for low light and subject separation
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Lightweight design easy to carry all day
Cons
- –Third-party or older alternatives may offer better value
Decided which one is right for you?
Compare live prices for the RF 50mm F1.2L USM and AF 13mm F1.4 XF at major authorized retailers.
Canon RF 50mm F1.2L USM
Viltrox AF 13mm F1.4 XF
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.