Leica
APO-Summicron-SL 90mm f/2 ASPH.
Leica L Mount
APO-Summicron-SL 90mm f/2 ASPH. — 90mm f/2 for Leica L, a popular choice in the leica lineup.
$4,195
Launch priceReleased Apr 2023
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 90mm f/2 ASPH. is 7.5 years newer.
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Wins
APO-Summicron-SL 90mm f/2 ASPH.
Wins
Summilux-SL 50mm f/1.4 ASPH.
2 categories tied
TL;DR — Key differences
- 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 90mm f/2 ASPH. has higher Max magnification (0.17 × vs 0.14 ×)
- AAPO-Summicron-SL 90mm f/2 ASPH. has lower Diameter (73 mm vs 88 mm)
- AAPO-Summicron-SL 90mm f/2 ASPH. has lower Weight (640 g vs 680 g)
Key specs at a glance
Size and weight, to scale
APO-Summicron-SL 90mm f/2 ASPH.
⌀73 × 109 mm
640 g (1.41 lb / 22.58 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 90mm f/2 ASPH. is 1mm longer and 15mm narrower than Summilux-SL 50mm f/1.4 ASPH..
APO-Summicron-SL 90mm f/2 ASPH. is 40 g lighter 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 90mm f/2 ASPH.
- ✓
Special elements
Adds 3 Aspherical
- ✓
Diameter
73 mm vs 88 mm — lower is better
- ✓
Weight
640 g vs 680 g — lower is better
- ✓
Max magnification
0.17 × vs 0.14 × — higher 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
- ✓
Length
108 mm vs 109 mm — lower is better
Shared specifications
Min focus distance
Both 60 cm
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 90mm 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 90mm f/2 ASPH. and Summilux-SL 50mm f/1.4 ASPH. at major authorized retailers.
Leica APO-Summicron-SL 90mm 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.