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
Tamron
17-28mm F2.8 Di III RXD
Sony E Mount
17-28mm F2.8 Di III RXD — 17–28mm f/2.8 for Sony E, a popular choice in the tamron lineup.
$899
Launch priceReleased Jun 2019
17-28mm F2.8 Di III RXD is 1 year newer.
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Wins
17-28mm F2.8 Di III RXD
Wins
17-28mm F2.8 Di III RXD
3 categories tied
TL;DR — Key differences
- A17-28mm F2.8 Di III RXD has lower Min focus distance (19 cm vs 38 cm)
- B17-28mm F2.8 Di III RXD has higher Max magnification (0.25 × vs 0.19 ×)
- A17-28mm F2.8 Di III RXD has lower Length (92 mm vs 109 mm)
- A17-28mm F2.8 Di III RXD has lower Diameter (79.6 mm vs 86 mm)
- B17-28mm F2.8 Di III RXD has lower Weight (420 g vs 438 g)
Key specs at a glance
Size and weight, to scale
17-28mm F2.8 Di III RXD
⌀80 × 92 mm
438 g (0.97 lb / 15.45 oz)
Credit card
85.6 × 54 mm
for scale
17-28mm F2.8 Di III RXD
⌀86 × 109 mm
420 g (0.93 lb / 14.82 oz)
17-28mm F2.8 Di III RXD is 17mm shorter and 6mm narrower than 17-28mm F2.8 Di III RXD.
17-28mm F2.8 Di III RXD is 18 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 17-28mm F2.8 Di III RXD
- ✓
Special elements
Adds 1 LD, 2 GM Aspherical
- ✓
Min focus distance
19 cm vs 38 cm — lower is better
- ✓
Length
92 mm vs 109 mm — lower is better
- ✓
Diameter
79.6 mm vs 86 mm — lower is better
Reasons to choose the 17-28mm F2.8 Di III RXD
- ✓
Special elements
Adds Aspherical
- ✓
Max magnification
0.25 × vs 0.19 × — higher is better
- ✓
Weight
420 g vs 438 g — lower is better
Shared specifications
Max aperture (Wide)
Both f/2.8
Max aperture (Tele)
Both f/2.8
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
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
17-28mm F2.8 Di III RXD
Pros
- ✓Versatile zoom range covers multiple focal lengths in one lens
- ✓Weather-sealed construction for outdoor shooting
- ✓Native Sony E mount compatibility
Cons
- –Third-party or older alternatives may offer better value
Decided which one is right for you?
Compare live prices for the 17-28mm F2.8 Di III RXD and 17-28mm F2.8 Di III RXD at major authorized retailers.
Tamron 17-28mm F2.8 Di III RXD
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.