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
Sony
FE 50mm F1.2 GM
Sony E Mount
Exquisite resolution and dreamy bokeh combine in a masterful f/1.2 prime.
$1,999
Launch priceReleased Mar 2021
FE 50mm F1.2 GM is 1.6 years newer.
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Wins
APO-Summicron-SL 50mm f/2 ASPH.
Wins
FE 50mm F1.2 GM
1 categories tied
Which would you choose?
TL;DR — Key differences
- BFE 50mm F1.2 GM has lower Max aperture (Wide) (f/1.2 vs f/2)
- BFE 50mm F1.2 GM has lower Max aperture (Tele) (f/1.2 vs f/2)
- AAPO-Summicron-SL 50mm f/2 ASPH. has lower Diameter (73 mm vs 87 mm)
- AAPO-Summicron-SL 50mm f/2 ASPH. has higher Max magnification (0.2 × vs 0.17 ×)
- AAPO-Summicron-SL 50mm f/2 ASPH. has lower Min focus distance (35 cm vs 40 cm)
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
FE 50mm F1.2 GM
⌀87 × 108 mm
778 g (1.72 lb / 27.44 oz)
APO-Summicron-SL 50mm f/2 ASPH. is 6mm shorter and 14mm narrower than FE 50mm F1.2 GM.
APO-Summicron-SL 50mm f/2 ASPH. is 38 g lighter than FE 50mm F1.2 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 APO-Summicron-SL 50mm f/2 ASPH.
- ✓
Special elements
Adds 3 Aspherical
- ✓
Diameter
73 mm vs 87 mm — lower is better
- ✓
Min focus distance
35 cm vs 40 cm — lower is better
- ✓
Length
102 mm vs 108 mm — lower is better
- ✓
Weight
740 g vs 778 g — lower is better
- ✓
Max magnification
0.2 × vs 0.17 × — higher is better
Reasons to choose the FE 50mm F1.2 GM
- ✓
Special elements
Adds 3 XA (extreme aspherical)
- ✓
Max aperture (Wide)
f/1.2 vs f/2 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/2 — 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
FE 50mm F1.2 GM
Pros
- ✓Outstanding sharpness wide open at f/1.2
- ✓Stunningly smooth, circular bokeh with 11 aperture blades
- ✓Extremely quiet and fast autofocus tracking
- ✓Manageable size and weight for an f/1.2 lens
Cons
- –Expensive investment for a single focal length
- –Heavy compared to standard f/1.8 options
- –Some visible vignetting wide open
Decided which one is right for you?
Compare live prices for the APO-Summicron-SL 50mm f/2 ASPH. and FE 50mm F1.2 GM at major authorized retailers.
Leica APO-Summicron-SL 50mm f/2 ASPH.
Sony FE 50mm F1.2 GM
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.