Panasonic
LUMIX S 14-28mm F4-5.6
Leica L Mount
LUMIX S 14-28mm F4-5.6 — 14–28mm f/4-5.6 for Leica L, a popular choice in the panasonic lineup.
$899
Launch priceReleased Jan 2023
Tamron
17-28mm F2.8 Di III RXD
Leica L Mount
17-28mm F2.8 Di III RXD — 17–28mm f/2.8 for Leica L, a popular choice in the tamron lineup.
$799
Launch priceReleased Jun 2020
LUMIX S 14-28mm F4-5.6 is 2.5 years newer.
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Wins
LUMIX S 14-28mm F4-5.6
Wins
17-28mm F2.8 Di III RXD
1 categories tied
TL;DR — Key differences
- B17-28mm F2.8 Di III RXD has lower Max aperture (Tele) (f/2.8 vs f/5.6)
- B17-28mm F2.8 Di III RXD has lower Min focus distance (19 cm vs 38 cm)
- B17-28mm F2.8 Di III RXD has lower Max aperture (Wide) (f/2.8 vs f/4)
- ALUMIX S 14-28mm F4-5.6 has higher Max magnification (0.25 × vs 0.19 ×)
- B17-28mm F2.8 Di III RXD has lower Length (92 mm vs 113 mm)
Key specs at a glance
Size and weight, to scale
LUMIX S 14-28mm F4-5.6
⌀86 × 113 mm
450 g (0.99 lb / 15.87 oz)
Credit card
85.6 × 54 mm
for scale
17-28mm F2.8 Di III RXD
⌀80 × 92 mm
438 g (0.97 lb / 15.45 oz)
LUMIX S 14-28mm F4-5.6 is 21mm longer and 6mm wider than 17-28mm F2.8 Di III RXD.
LUMIX S 14-28mm F4-5.6 is 12 g heavier than 17-28mm F2.8 Di III RXD.
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 14-28mm F4-5.6
- ✓
Special elements
Adds Aspherical
- ✓
Max magnification
0.25 × vs 0.19 × — higher is better
Reasons to choose the 17-28mm F2.8 Di III RXD
- ✓
Special elements
Adds 1 LD, 2 GM Aspherical
- ✓
Max aperture (Tele)
f/2.8 vs f/5.6 — lower is better
- ✓
Min focus distance
19 cm vs 38 cm — lower is better
- ✓
Max aperture (Wide)
f/2.8 vs f/4 — lower is better
- ✓
Length
92 mm vs 113 mm — lower is better
- ✓
Diameter
79.6 mm vs 86 mm — lower is better
- ✓
Weight
438 g vs 450 g — 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 14-28mm F4-5.6
Pros
- ✓Versatile zoom range covers multiple focal lengths in one lens
- ✓Weather-sealed construction for outdoor shooting
- ✓Native Leica L mount compatibility
Cons
- –Slower maximum aperture limits low-light performance
- –Third-party or older alternatives may offer better value
17-28mm F2.8 Di III RXD
Pros
- ✓Versatile zoom range covers multiple focal lengths in one lens
- ✓Solid optical performance for the price tier
- ✓Native Leica L mount compatibility
Cons
- –Third-party or older alternatives may offer better value
Decided which one is right for you?
Compare live prices for the LUMIX S 14-28mm F4-5.6 and 17-28mm F2.8 Di III RXD at major authorized retailers.
Panasonic LUMIX S 14-28mm F4-5.6
Tamron 17-28mm F2.8 Di III RXD
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.