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
Sigma
56mm F1.4 DC DN Contemporary
Fujifilm X Mount
56mm F1.4 DC DN Contemporary — 56mm f/1.4 for Fujifilm X, a popular choice in the sigma lineup.
$429
Launch priceReleased Jun 2023
56mm F1.4 DC DN Contemporary is 4.5 years newer.
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Wins
RF 50mm F1.2L USM
Wins
56mm F1.4 DC DN Contemporary
1 categories tied
Which would you choose?
TL;DR — Key differences
- B56mm F1.4 DC DN Contemporary has lower Weight (280 g vs 950 g)
- B56mm F1.4 DC DN Contemporary has lower Length (66.5 mm vs 108 mm)
- ARF 50mm F1.2L USM has higher Max magnification (0.19 × vs 0.14 ×)
- B56mm F1.4 DC DN Contemporary has lower Diameter (67.4 mm vs 89.8 mm)
- ARF 50mm F1.2L USM has lower Min focus distance (40 cm vs 50 cm)
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
56mm F1.4 DC DN Contemporary
⌀67 × 67 mm
280 g (0.62 lb / 9.88 oz)
RF 50mm F1.2L USM is 42mm longer and 22mm wider than 56mm F1.4 DC DN Contemporary.
RF 50mm F1.2L USM is 670 g heavier than 56mm F1.4 DC DN Contemporary.
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
- ✓
Weather sealing
Only RF 50mm F1.2L USM supports it
- ✓
Control ring
Only RF 50mm F1.2L USM supports it
- ✓
Min focus distance
40 cm vs 50 cm — lower is better
- ✓
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 0.14 × — higher is better
Reasons to choose the 56mm F1.4 DC DN Contemporary
- ✓
Special elements
Adds 1 SLD, 2 Aspherical
- ✓
Weight
280 g vs 950 g — lower is better
- ✓
Length
66.5 mm vs 108 mm — lower is better
- ✓
Diameter
67.4 mm vs 89.8 mm — lower is better
Shared specifications
Internal focus
Both support internal focus
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
56mm F1.4 DC DN Contemporary
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 56mm F1.4 DC DN Contemporary at major authorized retailers.
Canon RF 50mm F1.2L USM
Sigma 56mm F1.4 DC DN Contemporary
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.