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
Summicron-SL 50mm f/2 ASPH.
Leica L Mount
Summicron-SL 50mm f/2 ASPH. — 50mm f/2 for Leica L, a popular choice in the leica lineup.
$2,195
Launch priceReleased Oct 2016
APO-Summicron-SL 90mm f/2 ASPH. is 6.4 years newer.
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Wins
APO-Summicron-SL 90mm f/2 ASPH.
Wins
Summicron-SL 50mm f/2 ASPH.
4 categories tied
TL;DR — Key differences
- BSummicron-SL 50mm f/2 ASPH. has lower Length (89 mm vs 109 mm)
- BSummicron-SL 50mm f/2 ASPH. has lower Min focus distance (50 cm vs 60 cm)
- BSummicron-SL 50mm f/2 ASPH. has higher Max magnification (0.2 × vs 0.17 ×)
- BSummicron-SL 50mm f/2 ASPH. has lower Weight (580 g vs 640 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
Summicron-SL 50mm f/2 ASPH.
⌀73 × 89 mm
580 g (1.28 lb / 20.46 oz)
APO-Summicron-SL 90mm f/2 ASPH. is 20mm longer than Summicron-SL 50mm f/2 ASPH..
APO-Summicron-SL 90mm f/2 ASPH. is 60 g heavier than Summicron-SL 50mm f/2 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
Reasons to choose the Summicron-SL 50mm f/2 ASPH.
- ✓
Special elements
Adds 2 Aspherical
- ✓
Length
89 mm vs 109 mm — lower is better
- ✓
Min focus distance
50 cm vs 60 cm — lower is better
- ✓
Weight
580 g vs 640 g — lower is better
- ✓
Max magnification
0.2 × vs 0.17 × — higher is better
Shared specifications
Max aperture (Wide)
Both f/2
Max aperture (Tele)
Both f/2
Internal focus
Both support internal focus
Diameter
Both 73 mm
Weather sealing
Both support weather sealing
Control ring
Both support control ring
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
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
Decided which one is right for you?
Compare live prices for the APO-Summicron-SL 90mm f/2 ASPH. and Summicron-SL 50mm f/2 ASPH. at major authorized retailers.
Leica APO-Summicron-SL 90mm f/2 ASPH.
Leica Summicron-SL 50mm f/2 ASPH.
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.