Sony
FE 400mm F2.8 GM OSS
Sony E Mount
World's lightest 400mm F2.8 — 2895g with 3 fluorite elements, XD Linear AF, and OSS.
$12,000
Launch priceReleased Jun 2018
Sony
FE 50mm F1.4 GM
Sony E Mount
FE 50mm F1.4 GM — 50mm f/1.4 for Sony E, a popular choice in the sony lineup.
$1,799
Launch priceReleased Feb 2023
FE 50mm F1.4 GM is 4.7 years newer.
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Wins
FE 400mm F2.8 GM OSS
Wins
FE 50mm F1.4 GM
1 categories tied
Which would you choose?
TL;DR — Key differences
- AFE 400mm F2.8 GM OSS has higher OIS effectiveness (5 stops vs 0 stops)
- BFE 50mm F1.4 GM has lower Min focus distance (41 cm vs 270 cm)
- BFE 50mm F1.4 GM has lower Weight (516 g vs 2895 g)
- BFE 50mm F1.4 GM has lower Length (96 mm vs 359 mm)
- BFE 50mm F1.4 GM has lower Max aperture (Wide) (f/1.4 vs f/2.8)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareFE 400mm F2.8 GM OSS
⌀158 × 359 mm
2895 g (6.38 lb / 102.12 oz)
Credit card
85.6 × 54 mm
for scale
FE 50mm F1.4 GM
⌀81 × 96 mm
516 g (1.14 lb / 18.20 oz)
FE 400mm F2.8 GM OSS is 263mm longer and 78mm wider than FE 50mm F1.4 GM.
FE 400mm F2.8 GM OSS is 2379 g heavier than FE 50mm F1.4 GM.
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 FE 400mm F2.8 GM OSS
- ✓
Special elements
Adds 3 Fluorite, 1 ED
- ✓
OIS effectiveness
5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only FE 400mm F2.8 GM OSS supports it
Reasons to choose the FE 50mm F1.4 GM
- ✓
Special elements
Adds Aspherical, ED
- ✓
Min focus distance
41 cm vs 270 cm — lower is better
- ✓
Weight
516 g vs 2895 g — lower is better
- ✓
Length
96 mm vs 359 mm — lower is better
- ✓
Max aperture (Wide)
f/1.4 vs f/2.8 — lower is better
- ✓
Max aperture (Tele)
f/1.4 vs f/2.8 — lower is better
- ✓
Diameter
80.6 mm vs 158.1 mm — lower is better
Shared specifications
Max magnification
Both 0.16 ×
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.
FE 400mm F2.8 GM OSS
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
FE 50mm F1.4 GM
Pros
- ✓Bright f/1.4 aperture for low light and subject separation
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Weather-sealed construction for outdoor shooting
Cons
- –Third-party or older alternatives may offer better value
Decided which one is right for you?
Compare live prices for the FE 400mm F2.8 GM OSS and FE 50mm F1.4 GM at major authorized retailers.
Sony FE 400mm F2.8 GM OSS
Sony FE 50mm F1.4 GM
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed August 2026.