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 Feb 2023
FE 50mm F1.4 GM is 4.3 years newer.
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Wins
LEICA DG SUMMILUX 25mm F1.4 II
Wins
FE 50mm F1.4 GM
3 categories tied
Which would you choose?
TL;DR — Key differences
- ALEICA DG SUMMILUX 25mm F1.4 II has lower Weight (265 g vs 516 g)
- ALEICA DG SUMMILUX 25mm F1.4 II has lower Min focus distance (30 cm vs 41 cm)
- ALEICA DG SUMMILUX 25mm F1.4 II has lower Diameter (70 mm vs 80.6 mm)
- ALEICA DG SUMMILUX 25mm F1.4 II has lower Length (87 mm vs 96 mm)
- BFE 50mm F1.4 GM has higher Max magnification (0.16 × vs 0.15 ×)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareLEICA DG SUMMILUX 25mm F1.4 II
⌀70 × 87 mm
265 g (0.58 lb / 9.35 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)
LEICA DG SUMMILUX 25mm F1.4 II is 9mm shorter and 11mm narrower than FE 50mm F1.4 GM.
LEICA DG SUMMILUX 25mm F1.4 II is 251 g lighter 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 LEICA DG SUMMILUX 25mm F1.4 II
- ✓
Weight
265 g vs 516 g — lower is better
- ✓
Min focus distance
30 cm vs 41 cm — lower is better
- ✓
Diameter
70 mm vs 80.6 mm — lower is better
- ✓
Length
87 mm vs 96 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
- ✓
Max magnification
0.16 × vs 0.15 × — higher is better
Shared specifications
Max aperture (Wide)
Both f/1.4
Max aperture (Tele)
Both f/1.4
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 July 2026.