Panasonic
LUMIX S 50mm F1.8
Leica L Mount
LUMIX S 50mm F1.8 — 50mm f/1.8 for Leica L, a popular choice in the panasonic lineup.
$449
Launch priceReleased Nov 2020
Sony
FE 300mm F2.8 GM OSS
Sony E Mount
World's lightest 300mm F2.8 — 1470g with XD Linear AF, OSS, and G Master resolution.
$6,999
Launch priceReleased Jan 2024
FE 300mm F2.8 GM OSS is 3.2 years newer.
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Wins
LUMIX S 50mm F1.8
Wins
FE 300mm F2.8 GM OSS
TL;DR — Key differences
- BFE 300mm F2.8 GM OSS has higher OIS effectiveness (5 stops vs 0 stops)
- ALUMIX S 50mm F1.8 has lower Min focus distance (30 cm vs 200 cm)
- ALUMIX S 50mm F1.8 has lower Weight (300 g vs 1470 g)
- ALUMIX S 50mm F1.8 has lower Length (92 mm vs 265 mm)
- ALUMIX S 50mm F1.8 has lower Max aperture (Wide) (f/1.8 vs f/2.8)
Key specs at a glance
Size and weight, to scale
LUMIX S 50mm F1.8
⌀81 × 92 mm
300 g (0.66 lb / 10.58 oz)
Credit card
85.6 × 54 mm
for scale
FE 300mm F2.8 GM OSS
⌀124 × 265 mm
1470 g (3.24 lb / 51.85 oz)
LUMIX S 50mm F1.8 is 173mm shorter and 43mm narrower than FE 300mm F2.8 GM OSS.
LUMIX S 50mm F1.8 is 1170 g lighter than FE 300mm F2.8 GM OSS.
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 50mm F1.8
- ✓
Special elements
Adds Aspherical
- ✓
Min focus distance
30 cm vs 200 cm — lower is better
- ✓
Weight
300 g vs 1470 g — lower is better
- ✓
Length
92 mm vs 265 mm — lower is better
- ✓
Max aperture (Wide)
f/1.8 vs f/2.8 — lower is better
- ✓
Max aperture (Tele)
f/1.8 vs f/2.8 — lower is better
- ✓
Diameter
81 mm vs 124 mm — lower is better
Reasons to choose the FE 300mm F2.8 GM OSS
- ✓
Special elements
Adds 3 Super ED, 1 ED
- ✓
OIS effectiveness
5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only FE 300mm F2.8 GM OSS supports it
- ✓
Weather sealing
Only FE 300mm F2.8 GM OSS supports it
- ✓
Control ring
Only FE 300mm F2.8 GM OSS supports it
- ✓
Custom function button
Only FE 300mm F2.8 GM OSS supports it
- ✓
Max magnification
0.16 × vs 0.15 × — higher is better
Shared specifications
Internal focus
Both support internal focus
Pros & cons at a glance
Editorially curated highlights and trade-offs.
LUMIX S 50mm F1.8
Pros
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Lightweight design easy to carry all day
- ✓Native Leica L mount compatibility
Cons
- –Third-party or older alternatives may offer better value
FE 300mm 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
Decided which one is right for you?
Compare live prices for the LUMIX S 50mm F1.8 and FE 300mm F2.8 GM OSS at major authorized retailers.
Panasonic LUMIX S 50mm F1.8
Sony FE 300mm F2.8 GM OSS
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.