Panasonic
LUMIX S 100-400mm F5-6.3
Leica L Mount
LUMIX S 100-400mm F5-6.3 — 100–400mm f/5-6.3 for Leica L, a popular choice in the panasonic lineup.
$1,299
Launch priceReleased Jan 2024
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 Mar 2025
FE 50mm F1.4 GM is 1.2 years newer.
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Wins
LUMIX S 100-400mm F5-6.3
Wins
FE 50mm F1.4 GM
Which would you choose?
TL;DR — Key differences
- ALUMIX S 100-400mm F5-6.3 has higher OIS effectiveness (5.5 stops vs 0 stops)
- BFE 50mm F1.4 GM has lower Max aperture (Tele) (f/1.4 vs f/6.3)
- BFE 50mm F1.4 GM has lower Min focus distance (30 cm vs 130 cm)
- BFE 50mm F1.4 GM has lower Max aperture (Wide) (f/1.4 vs f/5)
- BFE 50mm F1.4 GM has lower Weight (580 g vs 985 g)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareLUMIX S 100-400mm F5-6.3
⌀83 × 206 mm
985 g (2.17 lb / 34.74 oz)
Credit card
85.6 × 54 mm
for scale
FE 50mm F1.4 GM
⌀81 × 131 mm
580 g (1.28 lb / 20.46 oz)
LUMIX S 100-400mm F5-6.3 is 75mm longer and 2mm wider than FE 50mm F1.4 GM.
LUMIX S 100-400mm F5-6.3 is 405 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 LUMIX S 100-400mm F5-6.3
- ✓
Special elements
Adds 2 ED, 1 UED
- ✓
OIS effectiveness
5.5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only LUMIX S 100-400mm F5-6.3 supports it
- ✓
Max magnification
0.25 × vs 0.15 × — higher is better
Reasons to choose the FE 50mm F1.4 GM
- ✓
Special elements
Adds Aspherical, ED
- ✓
Max aperture (Tele)
f/1.4 vs f/6.3 — lower is better
- ✓
Min focus distance
30 cm vs 130 cm — lower is better
- ✓
Max aperture (Wide)
f/1.4 vs f/5 — lower is better
- ✓
Weight
580 g vs 985 g — lower is better
- ✓
Length
131 mm vs 205.5 mm — lower is better
- ✓
Diameter
81 mm vs 83 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.
LUMIX S 100-400mm F5-6.3
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 F1.4 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 LUMIX S 100-400mm F5-6.3 and FE 50mm F1.4 GM at major authorized retailers.
Panasonic LUMIX S 100-400mm F5-6.3
Sony FE 50mm F1.4 GM
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.