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
Sony
FE 50mm F1.4 GM
Sony E Mount
FE 50mm F1.4 GM — 50mm f/1.4 for Sony E, a popular choice in the sony lineup.
$1,799
Launch priceReleased Mar 2025
FE 50mm F1.4 GM is 8.3 years newer.
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Wins
Summicron-SL 50mm f/2 ASPH.
Wins
FE 50mm F1.4 GM
2 categories tied
TL;DR — Key differences
- BFE 50mm F1.4 GM has lower Min focus distance (30 cm vs 50 cm)
- ASummicron-SL 50mm f/2 ASPH. has lower Length (89 mm vs 131 mm)
- BFE 50mm F1.4 GM has lower Max aperture (Wide) (f/1.4 vs f/2)
- BFE 50mm F1.4 GM has lower Max aperture (Tele) (f/1.4 vs f/2)
- ASummicron-SL 50mm f/2 ASPH. has higher Max magnification (0.2 × vs 0.15 ×)
Key specs at a glance
Size and weight, to scale
Summicron-SL 50mm f/2 ASPH.
⌀73 × 89 mm
580 g (1.28 lb / 20.46 oz)
Credit card
85.6 × 54 mm
for scale
FE 50mm F1.4 GM
⌀81 × 131 mm
580 g (1.28 lb / 20.46 oz)
Summicron-SL 50mm f/2 ASPH. is 42mm shorter and 8mm narrower than FE 50mm F1.4 GM.
Summicron-SL 50mm f/2 ASPH. and FE 50mm F1.4 GM weigh the same.
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 Summicron-SL 50mm f/2 ASPH.
- ✓
Special elements
Adds 2 Aspherical
- ✓
Length
89 mm vs 131 mm — lower is better
- ✓
Diameter
73 mm vs 81 mm — lower is better
- ✓
Max magnification
0.2 × vs 0.15 × — higher is better
Reasons to choose the FE 50mm F1.4 GM
- ✓
Special elements
Adds Aspherical, ED
- ✓
Min focus distance
30 cm vs 50 cm — lower is better
- ✓
Max aperture (Wide)
f/1.4 vs f/2 — lower is better
- ✓
Max aperture (Tele)
f/1.4 vs f/2 — lower is better
Shared specifications
Internal focus
Both support internal focus
Weight
Both 580 g
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.
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 F1.4 GM
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
- –Third-party or older alternatives may offer better value
Decided which one is right for you?
Compare live prices for the Summicron-SL 50mm f/2 ASPH. and FE 50mm F1.4 GM at major authorized retailers.
Leica Summicron-SL 50mm f/2 ASPH.
Sony FE 50mm F1.4 GM
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.