Fujifilm
XF 100-400mm F4.5-5.6 R LM OIS WR
Fujifilm X Mount
XF 100-400mm F4.5-5.6 R LM OIS WR — 100–400mm f/4.5-5.6 for Fujifilm X, a popular choice in the fujifilm lineup.
$1,899
Launch priceReleased Jan 2016
Sony
FE 50mm F1.2 GM
Sony E Mount
Exquisite resolution and dreamy bokeh combine in a masterful f/1.2 prime.
$1,999
Launch priceReleased Mar 2021
FE 50mm F1.2 GM is 5.2 years newer.
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Wins
XF 100-400mm F4.5-5.6 R LM OIS WR
Wins
FE 50mm F1.2 GM
TL;DR — Key differences
- AXF 100-400mm F4.5-5.6 R LM OIS WR has higher OIS effectiveness (5 stops vs 0 stops)
- BFE 50mm F1.2 GM has lower Max aperture (Tele) (f/1.2 vs f/5.6)
- BFE 50mm F1.2 GM has lower Max aperture (Wide) (f/1.2 vs f/4.5)
- BFE 50mm F1.2 GM has lower Length (108 mm vs 243 mm)
- BFE 50mm F1.2 GM has lower Weight (778 g vs 1375 g)
Key specs at a glance
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 XF 100-400mm F4.5-5.6 R LM OIS WR
- ✓
Special elements
Adds Aspherical
- ✓
OIS effectiveness
5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only XF 100-400mm F4.5-5.6 R LM OIS WR supports it
- ✓
Diameter
70 mm vs 87 mm — lower is better
- ✓
Max magnification
0.25 × vs 0.17 × — higher is better
- ✓
Min focus distance
38 cm vs 40 cm — lower is better
Reasons to choose the FE 50mm F1.2 GM
- ✓
Special elements
Adds 3 XA (extreme aspherical)
- ✓
Max aperture (Tele)
f/1.2 vs f/5.6 — lower is better
- ✓
Max aperture (Wide)
f/1.2 vs f/4.5 — lower is better
- ✓
Length
108 mm vs 243 mm — lower is better
- ✓
Weight
778 g vs 1375 g — lower is better
Shared specifications
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
Control ring
Both support control ring
Custom function button
Both support custom function button
Pros & cons at a glance
Editorially curated highlights and trade-offs.
XF 100-400mm F4.5-5.6 R LM OIS WR
Pros
- ✓Versatile zoom range covers multiple focal lengths in one lens
- ✓Built-in optical image stabilization
- ✓Weather-sealed construction for outdoor shooting
Cons
- –Relatively heavy for extended handheld use
- –Slower maximum aperture limits low-light performance
FE 50mm F1.2 GM
Pros
- ✓Outstanding sharpness wide open at f/1.2
- ✓Stunningly smooth, circular bokeh with 11 aperture blades
- ✓Extremely quiet and fast autofocus tracking
- ✓Manageable size and weight for an f/1.2 lens
Cons
- –Expensive investment for a single focal length
- –Heavy compared to standard f/1.8 options
- –Some visible vignetting wide open
Decided which one is right for you?
Compare live prices for the XF 100-400mm F4.5-5.6 R LM OIS WR and FE 50mm F1.2 GM at major authorized retailers.
Fujifilm XF 100-400mm F4.5-5.6 R LM OIS WR
Sony FE 50mm F1.2 GM
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.