Leica
APO-Summicron-SL 50mm f/2 ASPH.
Leica L Mount
APO-Summicron-SL 50mm f/2 ASPH. — 50mm f/2 for Leica L, a popular choice in the leica lineup.
$2,595
Launch priceReleased Aug 2019
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
LUMIX S 50mm F1.8 is 1.3 years newer.
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Wins
APO-Summicron-SL 50mm f/2 ASPH.
Wins
LUMIX S 50mm F1.8
1 categories tied
Which would you choose?
TL;DR — Key differences
- BLUMIX S 50mm F1.8 has lower Weight (300 g vs 740 g)
- AAPO-Summicron-SL 50mm f/2 ASPH. has higher Max magnification (0.2 × vs 0.15 ×)
- BLUMIX S 50mm F1.8 has lower Min focus distance (30 cm vs 35 cm)
- BLUMIX S 50mm F1.8 has lower Max aperture (Wide) (f/1.8 vs f/2)
- BLUMIX S 50mm F1.8 has lower Max aperture (Tele) (f/1.8 vs f/2)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareAPO-Summicron-SL 50mm f/2 ASPH.
⌀73 × 102 mm
740 g (1.63 lb / 26.10 oz)
Credit card
85.6 × 54 mm
for scale
LUMIX S 50mm F1.8
⌀81 × 92 mm
300 g (0.66 lb / 10.58 oz)
APO-Summicron-SL 50mm f/2 ASPH. is 10mm longer and 8mm narrower than LUMIX S 50mm F1.8.
APO-Summicron-SL 50mm f/2 ASPH. is 440 g heavier than LUMIX S 50mm F1.8.
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 APO-Summicron-SL 50mm f/2 ASPH.
- ✓
Special elements
Adds 3 Aspherical
- ✓
Weather sealing
Only APO-Summicron-SL 50mm f/2 ASPH. supports it
- ✓
Control ring
Only APO-Summicron-SL 50mm f/2 ASPH. supports it
- ✓
Custom function button
Only APO-Summicron-SL 50mm f/2 ASPH. supports it
- ✓
Diameter
73 mm vs 81 mm — lower is better
- ✓
Max magnification
0.2 × vs 0.15 × — higher is better
Reasons to choose the LUMIX S 50mm F1.8
- ✓
Special elements
Adds Aspherical
- ✓
Weight
300 g vs 740 g — lower is better
- ✓
Min focus distance
30 cm vs 35 cm — lower is better
- ✓
Max aperture (Wide)
f/1.8 vs f/2 — lower is better
- ✓
Max aperture (Tele)
f/1.8 vs f/2 — lower is better
- ✓
Length
92 mm vs 102 mm — lower is better
Shared specifications
Internal focus
Both support internal focus
Pros & cons at a glance
Editorially curated highlights and trade-offs.
APO-Summicron-SL 50mm f/2 ASPH.
Pros
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Weather-sealed construction for outdoor shooting
- ✓Native Leica L mount compatibility
Cons
- –Premium price point
- –Third-party or older alternatives may offer better value
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
Decided which one is right for you?
Compare live prices for the APO-Summicron-SL 50mm f/2 ASPH. and LUMIX S 50mm F1.8 at major authorized retailers.
Leica APO-Summicron-SL 50mm f/2 ASPH.
Panasonic LUMIX S 50mm F1.8
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.