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
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 5.5 years newer.
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Wins
Summilux-SL 50mm f/1.4 ASPH.
Wins
FE 50mm F1.2 GM
2 categories tied
TL;DR — Key differences
- BFE 50mm F1.2 GM has lower Min focus distance (40 cm vs 60 cm)
- BFE 50mm F1.2 GM has higher Max magnification (0.17 × vs 0.14 ×)
- BFE 50mm F1.2 GM has lower Max aperture (Wide) (f/1.2 vs f/1.4)
- BFE 50mm F1.2 GM has lower Max aperture (Tele) (f/1.2 vs f/1.4)
- ASummilux-SL 50mm f/1.4 ASPH. has lower Weight (680 g vs 778 g)
Key specs at a glance
Size and weight, to scale
Summilux-SL 50mm f/1.4 ASPH.
⌀88 × 108 mm
680 g (1.50 lb / 23.99 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)
Summilux-SL 50mm f/1.4 ASPH. is 1mm wider than FE 50mm F1.2 GM.
Summilux-SL 50mm f/1.4 ASPH. is 98 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 Summilux-SL 50mm f/1.4 ASPH.
- ✓
Special elements
Adds 2 Aspherical, 2 ED
- ✓
Weight
680 g vs 778 g — lower is better
Reasons to choose the FE 50mm F1.2 GM
- ✓
Special elements
Adds 3 XA (extreme aspherical)
- ✓
Min focus distance
40 cm vs 60 cm — lower is better
- ✓
Max aperture (Wide)
f/1.2 vs f/1.4 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/1.4 — lower is better
- ✓
Max magnification
0.17 × vs 0.14 × — higher is better
- ✓
Diameter
87 mm vs 88 mm — lower is better
Shared specifications
Internal focus
Both support internal focus
Length
Both 108 mm
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.
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
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 Summilux-SL 50mm f/1.4 ASPH. and FE 50mm F1.2 GM at major authorized retailers.
Leica Summilux-SL 50mm f/1.4 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.