Sony
FE 100-400mm F4.5-5.6 GM OSS
Sony E Mount
FE 100-400mm F4.5-5.6 GM OSS — 100–400mm f/4.5-5.6 for Sony E, a popular choice in the sony lineup.
$2,499
Launch priceReleased Jul 2017
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 5.6 years newer.
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Wins
FE 100-400mm F4.5-5.6 GM OSS
Wins
FE 50mm F1.4 GM
Which would you choose?
TL;DR — Key differences
- AFE 100-400mm F4.5-5.6 GM OSS has higher OIS effectiveness (5 stops vs 0 stops)
- BFE 50mm F1.4 GM has lower Max aperture (Tele) (f/1.4 vs f/5.6)
- BFE 50mm F1.4 GM has lower Max aperture (Wide) (f/1.4 vs f/4.5)
- BFE 50mm F1.4 GM has lower Weight (516 g vs 1395 g)
- BFE 50mm F1.4 GM has lower Length (96 mm vs 245 mm)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareFE 100-400mm F4.5-5.6 GM OSS
⌀81 × 245 mm
1395 g (3.08 lb / 49.21 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 100-400mm F4.5-5.6 GM OSS is 149mm longer than FE 50mm F1.4 GM.
FE 100-400mm F4.5-5.6 GM OSS is 879 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 100-400mm F4.5-5.6 GM OSS
- ✓
OIS effectiveness
5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only FE 100-400mm F4.5-5.6 GM OSS supports it
- ✓
Max magnification
0.25 × vs 0.16 × — higher is better
- ✓
Min focus distance
38 cm vs 41 cm — lower is better
Reasons to choose the FE 50mm F1.4 GM
- ✓
Max aperture (Tele)
f/1.4 vs f/5.6 — lower is better
- ✓
Max aperture (Wide)
f/1.4 vs f/4.5 — lower is better
- ✓
Weight
516 g vs 1395 g — lower is better
- ✓
Length
96 mm vs 245 mm — lower is better
- ✓
Special elements
Adds ED
- ✓
Diameter
80.6 mm vs 81 mm — 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.
FE 100-400mm F4.5-5.6 GM OSS
Pros
- ✓Versatile zoom range covers multiple focal lengths in one lens
- ✓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
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 100-400mm F4.5-5.6 GM OSS and FE 50mm F1.4 GM at major authorized retailers.
Sony FE 100-400mm F4.5-5.6 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 July 2026.