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
Sony
FE 28mm F2
Sony E Mount
FE 28mm F2 — 28mm f/2 for Sony E, a popular choice in the sony lineup.
$448
Launch priceReleased Mar 2015
RF 50mm F1.2L USM is 3.8 years newer.
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Wins
RF 50mm F1.2L USM
Wins
FE 28mm F2
1 categories tied
Which would you choose?
TL;DR — Key differences
- BFE 28mm F2 has lower Weight (200 g vs 950 g)
- ARF 50mm F1.2L USM has lower Max aperture (Wide) (f/1.2 vs f/2)
- ARF 50mm F1.2L USM has lower Max aperture (Tele) (f/1.2 vs f/2)
- BFE 28mm F2 has lower Length (78 mm vs 108 mm)
- BFE 28mm F2 has lower Min focus distance (30 cm vs 40 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
FE 28mm F2
⌀70 × 78 mm
200 g (0.44 lb / 7.05 oz)
RF 50mm F1.2L USM is 30mm longer and 20mm wider than FE 28mm F2.
RF 50mm F1.2L USM is 750 g heavier than FE 28mm F2.
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
- ✓
Max aperture (Wide)
f/1.2 vs f/2 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/2 — lower is better
- ✓
Max magnification
0.19 × vs 0.15 × — higher is better
Reasons to choose the FE 28mm F2
- ✓
Special elements
Adds Aspherical
- ✓
Weight
200 g vs 950 g — lower is better
- ✓
Length
78 mm vs 108 mm — lower is better
- ✓
Min focus distance
30 cm vs 40 cm — lower is better
- ✓
Diameter
70 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
FE 28mm F2
Pros
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Lightweight design easy to carry all day
- ✓Native Sony E 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 FE 28mm F2 at major authorized retailers.
Canon RF 50mm F1.2L USM
Sony FE 28mm F2
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.