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 Feb 2023
FE 50mm F1.4 GM is 6.3 years newer.
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Wins
Summicron-SL 50mm f/2 ASPH.
Wins
FE 50mm F1.4 GM
1 categories tied
Which would you choose?
TL;DR — Key differences
- 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 0.16 ×)
- BFE 50mm F1.4 GM has lower Min focus distance (41 cm vs 50 cm)
- BFE 50mm F1.4 GM has lower Weight (516 g vs 580 g)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareSummicron-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 × 96 mm
516 g (1.14 lb / 18.20 oz)
Summicron-SL 50mm f/2 ASPH. is 7mm shorter and 8mm narrower than FE 50mm F1.4 GM.
Summicron-SL 50mm f/2 ASPH. is 64 g heavier than FE 50mm F1.4 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 Summicron-SL 50mm f/2 ASPH.
- ✓
Special elements
Adds 2 Aspherical
- ✓
Diameter
73 mm vs 80.6 mm — lower is better
- ✓
Length
89 mm vs 96 mm — lower is better
- ✓
Max magnification
0.2 × vs 0.16 × — higher is better
Reasons to choose the FE 50mm F1.4 GM
- ✓
Special elements
Adds Aspherical, 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
- ✓
Min focus distance
41 cm vs 50 cm — lower is better
- ✓
Weight
516 g vs 580 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.
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 July 2026.