Canon
RF 50mm F1.2L USM
Canon RF Mount
Flagship RF 50mm f/1.2 L prime with Ring USM, 15-element design, and weather-sealed L-series build.
$2,299
Launch priceReleased Dec 2018
Viltrox
AF 56mm F1.2 Pro XF
Fujifilm X Mount
AF 56mm F1.2 Pro XF — 56mm f/1.2 for Fujifilm X, a popular choice in the viltrox lineup.
$729
Launch priceReleased May 2023
AF 56mm F1.2 Pro XF is 4.4 years newer.
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Wins
RF 50mm F1.2L USM
Wins
AF 56mm F1.2 Pro XF
3 categories tied
Which would you choose?
TL;DR — Key differences
- ARF 50mm F1.2L USM has higher Max magnification (0.19 × vs 0.1 ×)
- BAF 56mm F1.2 Pro XF has lower Weight (595 g vs 950 g)
- ARF 50mm F1.2L USM has lower Min focus distance (40 cm vs 50 cm)
- BAF 56mm F1.2 Pro XF has lower Diameter (76 mm vs 89.8 mm)
- BAF 56mm F1.2 Pro XF has lower Length (99 mm vs 108 mm)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to share
RF 50mm F1.2L USM
⌀90 × 108 mm
950 g (2.09 lb / 33.51 oz)
Credit card
85.6 × 54 mm
for scale
AF 56mm F1.2 Pro XF
⌀76 × 99 mm
595 g (1.31 lb / 20.99 oz)
RF 50mm F1.2L USM is 9mm longer and 14mm wider than AF 56mm F1.2 Pro XF.
RF 50mm F1.2L USM is 355 g heavier than AF 56mm F1.2 Pro 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
- ✓
Control ring
Only RF 50mm F1.2L USM supports it
- ✓
Min focus distance
40 cm vs 50 cm — lower is better
- ✓
Max magnification
0.19 × vs 0.1 × — higher is better
Reasons to choose the AF 56mm F1.2 Pro XF
- ✓
Special elements
Adds 2 ED, 2 HR
- ✓
Weight
595 g vs 950 g — lower is better
- ✓
Diameter
76 mm vs 89.8 mm — lower is better
- ✓
Length
99 mm vs 108 mm — lower is better
Shared specifications
Max aperture (Wide)
Both f/1.2
Max aperture (Tele)
Both f/1.2
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 10 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 56mm F1.2 Pro XF
Pros
- ✓Bright f/1.2 aperture for low light and subject separation
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Native Fujifilm X mount compatibility
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 56mm F1.2 Pro XF at major authorized retailers.
Canon RF 50mm F1.2L USM
Viltrox AF 56mm F1.2 Pro XF
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.