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
Fujifilm
GF 250mm F4 R LM OIS WR
Fujifilm GFX Mount
GF 250mm F4 R LM OIS WR — 250mm f/4 for Fujifilm GFX, a popular choice in the fujifilm lineup.
$3,299
Launch priceReleased Jan 2018
RF 50mm F1.2L USM is 11 months newer.
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Wins
RF 50mm F1.2L USM
Wins
GF 250mm F4 R LM OIS WR
Which would you choose?
TL;DR — Key differences
- BGF 250mm F4 R LM OIS WR has higher OIS effectiveness (5 stops vs 0 stops)
- ARF 50mm F1.2L USM has lower Min focus distance (40 cm vs 140 cm)
- ARF 50mm F1.2L USM has lower Max aperture (Wide) (f/1.2 vs f/4)
- ARF 50mm F1.2L USM has lower Max aperture (Tele) (f/1.2 vs f/4)
- ARF 50mm F1.2L USM has lower Length (108 mm vs 203.5 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
GF 250mm F4 R LM OIS WR
⌀108 × 204 mm
1425 g (3.14 lb / 50.27 oz)
RF 50mm F1.2L USM is 96mm shorter and 18mm narrower than GF 250mm F4 R LM OIS WR.
RF 50mm F1.2L USM is 475 g lighter than GF 250mm F4 R LM OIS WR.
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
- ✓
Min focus distance
40 cm vs 140 cm — lower is better
- ✓
Max aperture (Wide)
f/1.2 vs f/4 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/4 — lower is better
- ✓
Length
108 mm vs 203.5 mm — lower is better
- ✓
Weight
950 g vs 1425 g — lower is better
- ✓
Diameter
89.8 mm vs 108 mm — lower is better
Reasons to choose the GF 250mm F4 R LM OIS WR
- ✓
Special elements
Adds 2 ED, 1 Super ED
- ✓
OIS effectiveness
5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only GF 250mm F4 R LM OIS WR supports it
- ✓
Custom function button
Only GF 250mm F4 R LM OIS WR supports it
- ✓
Max magnification
0.22 × vs 0.19 × — higher is better
Shared specifications
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
Control ring
Both support control ring
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
GF 250mm F4 R LM OIS WR
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
- –Slower maximum aperture limits low-light performance
Decided which one is right for you?
Compare live prices for the RF 50mm F1.2L USM and GF 250mm F4 R LM OIS WR at major authorized retailers.
Canon RF 50mm F1.2L USM
Fujifilm GF 250mm F4 R LM OIS WR
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.