Lens comparison · Sony E / FE · updated 5 November 2026

Sigma 10-18mm f/2.8 DC DN Contemporary vs Tamron 11-20mm f/2.8 Di III-A RXD

Sigma 10-18mm f/2.8 DC DN Contemporary10-18mm · f/2.8 · 260g
Tamron 11-20mm f/2.8 Di III-A RXD11-20mm · f/2.8 · 335g
Verdict

Sigma 10-18mm f/2.8 DC DN Contemporary has more in its favour on paper.

Choose the 10-18mm f/2.8 DC DN Contemporary for

  • less weight (260g vs 335g)
  • a wider starting focal length (10mm vs 11mm)

Choose the 11-20mm f/2.8 Di III-A RXD for

  • a lower price (about £370 vs £540)
  • more reach (20mm vs 18mm)
10-18mm f/2.8 DC DN Contemporary11-20mm f/2.8 Di III-A RXD
BrandSigmaTamron
Focal length10-18mm11-20mm
Maximum aperturef/2.8f/2.8
Weight260 g335 g
StabilisationNoNo
Weather sealingYesYes
Filter size67mm67mm
Made forAPSCAPSC
New price£599£599
Used at MPB (Sony E / FE)£544–£544£339–£394

More lens comparisons

E PZ 10-20mm f/4 G vs 10-18mm f/2.8 DC DN ContemporaryRF-S 10-18mm f/4.5-6.3 IS STM vs 10-18mm f/2.8 DC DN ContemporaryE PZ 10-20mm f/4 G vs 11-20mm f/2.8 Di III-A RXDRF-S 10-18mm f/4.5-6.3 IS STM vs 11-20mm f/2.8 Di III-A RXD

See all Sony E / FE cameras and lenses.

Frequently asked questions

Is the Sigma 10-18mm f/2.8 DC DN Contemporary better than the Tamron 11-20mm f/2.8 Di III-A RXD?

The 10-18mm f/2.8 DC DN Contemporary offers less weight (260g vs 335g), a wider starting focal length (10mm vs 11mm); the 11-20mm f/2.8 Di III-A RXD offers a lower price (about £370 vs £540), more reach (20mm vs 18mm).

Which is better value, the 10-18mm f/2.8 DC DN Contemporary or the 11-20mm f/2.8 Di III-A RXD?

On Sony E / FE, the Tamron 11-20mm f/2.8 Di III-A RXD costs about £370 against about £540 for the Sigma 10-18mm f/2.8 DC DN Contemporary (MPB used where listed, otherwise new; checked 5 November 2026).

Do both lenses fit the same cameras?

Both are available for Sony E / FE (and other mounts: Fujifilm X, Canon RF / RF-S, L-Mount). Both are made for crop sensors.