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
Leica
Summilux-SL 50mm f/1.4 ASPH.
Leica L Mount
Summilux-SL 50mm f/1.4 ASPH. — 50mm f/1.4 for Leica L, a popular choice in the leica lineup.
$5,195
Launch priceReleased Sep 2015
APO-Summicron-SL 50mm f/2 ASPH. is 3.9 years newer.
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Wins
APO-Summicron-SL 50mm f/2 ASPH.
Wins
Summilux-SL 50mm f/1.4 ASPH.
1 categories tied
TL;DR — Key differences
- AAPO-Summicron-SL 50mm f/2 ASPH. has lower Min focus distance (35 cm vs 60 cm)
- BSummilux-SL 50mm f/1.4 ASPH. has lower Max aperture (Wide) (f/1.4 vs f/2)
- BSummilux-SL 50mm f/1.4 ASPH. has lower Max aperture (Tele) (f/1.4 vs f/2)
- AAPO-Summicron-SL 50mm f/2 ASPH. has higher Max magnification (0.2 × vs 0.14 ×)
- AAPO-Summicron-SL 50mm f/2 ASPH. has lower Diameter (73 mm vs 88 mm)
Key specs at a glance
Size and weight, to scale
APO-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
Summilux-SL 50mm f/1.4 ASPH.
⌀88 × 108 mm
680 g (1.50 lb / 23.99 oz)
APO-Summicron-SL 50mm f/2 ASPH. is 6mm shorter and 15mm narrower than Summilux-SL 50mm f/1.4 ASPH..
APO-Summicron-SL 50mm f/2 ASPH. is 60 g heavier than Summilux-SL 50mm f/1.4 ASPH..
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
- ✓
Min focus distance
35 cm vs 60 cm — lower is better
- ✓
Diameter
73 mm vs 88 mm — lower is better
- ✓
Max magnification
0.2 × vs 0.14 × — higher is better
- ✓
Length
102 mm vs 108 mm — lower is better
Reasons to choose the Summilux-SL 50mm f/1.4 ASPH.
- ✓
Special elements
Adds 2 Aspherical, 2 ED
- ✓
Max aperture (Wide)
f/1.4 vs f/2 — lower is better
- ✓
Max aperture (Tele)
f/1.4 vs f/2 — lower is better
- ✓
Weight
680 g vs 740 g — 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.
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
Summilux-SL 50mm f/1.4 ASPH.
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
- –Premium price point
- –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 Summilux-SL 50mm f/1.4 ASPH. at major authorized retailers.
Leica APO-Summicron-SL 50mm f/2 ASPH.
Leica Summilux-SL 50mm f/1.4 ASPH.
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.