Panasonic
LUMIX S 100-400mm F5-6.3
Leica L Mount
LUMIX S 100-400mm F5-6.3 — 100–400mm f/5-6.3 for Leica L, a popular choice in the panasonic lineup.
$1,299
Launch priceReleased Jan 2024
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 100-400mm F5-6.3 is 4.3 years newer.
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Wins
LUMIX S 100-400mm F5-6.3
Wins
LUMIX S PRO 50mm F1.4
Which would you choose?
TL;DR — Key differences
- ALUMIX S 100-400mm F5-6.3 has higher OIS effectiveness (5.5 stops vs 0 stops)
- BLUMIX S PRO 50mm F1.4 has lower Max aperture (Tele) (f/1.4 vs f/6.3)
- BLUMIX S PRO 50mm F1.4 has lower Min focus distance (30 cm vs 130 cm)
- BLUMIX S PRO 50mm F1.4 has lower Max aperture (Wide) (f/1.4 vs f/5)
- ALUMIX S 100-400mm F5-6.3 has higher Max magnification (0.25 × vs 0.15 ×)
Key specs at a glance
Size and weight, to scale
📸 Snap this lens size diff to shareLUMIX S 100-400mm F5-6.3
⌀83 × 206 mm
985 g (2.17 lb / 34.74 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 100-400mm F5-6.3 is 22mm longer and 2mm wider than LUMIX S PRO 50mm F1.4.
LUMIX S 100-400mm F5-6.3 is 27 g heavier 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 100-400mm F5-6.3
- ✓
Special elements
Adds 2 ED, 1 UED
- ✓
OIS effectiveness
5.5 stops vs 0 stops — higher is better
- ✓
Optical stabilization
Only LUMIX S 100-400mm F5-6.3 supports it
- ✓
Max magnification
0.25 × vs 0.15 × — higher is better
Reasons to choose the LUMIX S PRO 50mm F1.4
- ✓
Special elements
Adds Aspherical, ED
- ✓
Max aperture (Tele)
f/1.4 vs f/6.3 — lower is better
- ✓
Min focus distance
30 cm vs 130 cm — lower is better
- ✓
Max aperture (Wide)
f/1.4 vs f/5 — lower is better
- ✓
Length
184 mm vs 205.5 mm — lower is better
- ✓
Weight
958 g vs 985 g — lower is better
- ✓
Diameter
81 mm vs 83 mm — 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.
LUMIX S 100-400mm F5-6.3
Pros
- ✓Versatile zoom range covers multiple focal lengths in one lens
- ✓Built-in optical image stabilization
- ✓Weather-sealed construction for outdoor shooting
Cons
- –Relatively heavy for extended handheld use
- –Slower maximum aperture limits low-light performance
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 100-400mm F5-6.3 and LUMIX S PRO 50mm F1.4 at major authorized retailers.
Panasonic LUMIX S 100-400mm F5-6.3
Panasonic LUMIX S PRO 50mm F1.4
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.