Panasonic
LUMIX S 18mm F1.8
Leica L Mount
LUMIX S 18mm F1.8 — 18mm f/1.8 for Leica L, a popular choice in the panasonic lineup.
$599
Launch priceReleased Nov 2022
Panasonic
LUMIX S PRO 50mm F1.4
Leica L Mount
LUMIX S PRO 50mm F1.4 — 50mm f/1.4 for Leica L, a popular choice in the panasonic lineup.
$2,299
Launch priceReleased Oct 2019
LUMIX S 18mm F1.8 is 3.2 years newer.
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Wins
LUMIX S 18mm F1.8
Wins
LUMIX S PRO 50mm F1.4
1 categories tied
Which would you choose?
TL;DR — Key differences
- ALUMIX S 18mm F1.8 has lower Weight (340 g vs 958 g)
- ALUMIX S 18mm F1.8 has lower Length (86.5 mm vs 184 mm)
- ALUMIX S 18mm F1.8 has lower Min focus distance (20 cm vs 30 cm)
- ALUMIX S 18mm F1.8 has higher Max magnification (0.2 × vs 0.15 ×)
- BLUMIX S PRO 50mm F1.4 has lower Max aperture (Wide) (f/1.4 vs f/1.8)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareLUMIX S 18mm F1.8
⌀67 × 87 mm
340 g (0.75 lb / 11.99 oz)
Credit card
85.6 × 54 mm
for scale
LUMIX S PRO 50mm F1.4
⌀81 × 184 mm
958 g (2.11 lb / 33.79 oz)
LUMIX S 18mm F1.8 is 98mm shorter and 14mm narrower than LUMIX S PRO 50mm F1.4.
LUMIX S 18mm F1.8 is 618 g lighter than LUMIX S PRO 50mm F1.4.
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 LUMIX S 18mm F1.8
- ✓
Special elements
Adds 2 Aspherical, 1 ED
- ✓
Weight
340 g vs 958 g — lower is better
- ✓
Length
86.5 mm vs 184 mm — lower is better
- ✓
Min focus distance
20 cm vs 30 cm — lower is better
- ✓
Diameter
67 mm vs 81 mm — lower is better
- ✓
Max magnification
0.2 × vs 0.15 × — higher is better
Reasons to choose the LUMIX S PRO 50mm F1.4
- ✓
Special elements
Adds Aspherical, ED
- ✓
Control ring
Only LUMIX S PRO 50mm F1.4 supports it
- ✓
Custom function button
Only LUMIX S PRO 50mm F1.4 supports it
- ✓
Max aperture (Wide)
f/1.4 vs f/1.8 — lower is better
- ✓
Max aperture (Tele)
f/1.4 vs f/1.8 — lower is better
Shared specifications
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
LUMIX S 18mm F1.8
Pros
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Lightweight design easy to carry all day
- ✓Native Leica L mount compatibility
Cons
- –Third-party or older alternatives may offer better value
LUMIX S PRO 50mm F1.4
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
- –Relatively heavy for extended handheld use
Decided which one is right for you?
Compare live prices for the LUMIX S 18mm F1.8 and LUMIX S PRO 50mm F1.4 at major authorized retailers.
Panasonic LUMIX S 18mm F1.8
Panasonic LUMIX S PRO 50mm F1.4
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.