Panasonic
LEICA DG SUMMILUX 25mm F1.4 II
Micro Four Thirds Mount
LEICA DG SUMMILUX 25mm F1.4 II — 25mm f/1.4 for Micro Four Thirds, a popular choice in the panasonic lineup.
$699
Launch priceReleased Oct 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 Mar 2025
FE 50mm F1.4 GM is 6.4 years newer.
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Wins
LEICA DG SUMMILUX 25mm F1.4 II
Wins
FE 50mm F1.4 GM
5 categories tied
TL;DR — Key differences
- ALEICA DG SUMMILUX 25mm F1.4 II has lower Weight (265 g vs 580 g)
- ALEICA DG SUMMILUX 25mm F1.4 II has lower Length (87 mm vs 131 mm)
- ALEICA DG SUMMILUX 25mm F1.4 II has lower Diameter (70 mm vs 81 mm)
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 LEICA DG SUMMILUX 25mm F1.4 II
- ✓
Weight
265 g vs 580 g — lower is better
- ✓
Length
87 mm vs 131 mm — lower is better
- ✓
Diameter
70 mm vs 81 mm — lower is better
Reasons to choose the FE 50mm F1.4 GM
- ✓
Weather sealing
Only FE 50mm F1.4 GM supports it
- ✓
Control ring
Only FE 50mm F1.4 GM supports it
- ✓
Custom function button
Only FE 50mm F1.4 GM supports it
Shared specifications
Max aperture (Wide)
Both f/1.4
Max aperture (Tele)
Both f/1.4
Min focus distance
Both 30 cm
Max magnification
Both 0.15 ×
Internal focus
Both support internal focus
Pros & cons at a glance
Editorially curated highlights and trade-offs.
LEICA DG SUMMILUX 25mm F1.4 II
Pros
- ✓Bright f/1.4 aperture for low light and subject separation
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Lightweight design easy to carry all day
Cons
- –Third-party or older alternatives may offer better value
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 LEICA DG SUMMILUX 25mm F1.4 II and FE 50mm F1.4 GM at major authorized retailers.
Panasonic LEICA DG SUMMILUX 25mm F1.4 II
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 May 2026.