18-50mm f/2.8 DC DN Contemporaryvs 11-20mm f/2.8 Di III-A RXD

GearFrame · Updated March 2026

Sigma 18-50mm f/2.8 DC DN Contemporary Sigma 18-50mm f/2.8 DC DN Contemporary (2021) From £649 Best for Everyday, travel & events on Fujifilm or Sony APS-C View 18-50mm f/2.8 DC DN Contemporary
VS
Tamron 11-20mm f/2.8 Di III-A RXD Tamron 11-20mm f/2.8 Di III-A RXD (2021) From £599 Best for Landscape, astrophotography & architecture on Sony APS-C View 11-20mm f/2.8 Di III-A RXD

Which should you buy?

Everyday, Travel & Events On Fujifilm Or Sony Aps-C — 18-50mm f/2.8 DC DN Contemporary (2021): The lightest f/2.8 standard zoom ever made — 290g is astonishing for a lens of this capability, and it optically over-delivers at the price.

Landscape, Astrophotography & Architecture On Sony Aps-C — 11-20mm f/2.8 Di III-A RXD (2021): The definitive ultra-wide zoom for Sony APS-C — f/2.8 at 11mm in a compact, affordable, weather-sealed package.

↓ Full specifications below

Who should buy what

Quick take: The 11-20mm f/2.8 di iii-a rxd is the most affordable; only the 11-20mm f/2.8 di iii-a rxd is weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification 18-50mm f/2.8 DC DN Contemporary (2021)11-20mm f/2.8 Di III-A RXD (2021)
Price £649 £599
Sensor Fujifilm X mount (APS-C) Sony E-mount (APS-C)
Video N/A — lens N/A — lens
Autofocus Stepping motor — fast, quiet, video-friendly Rapid eXtra-silent stepping Drive (RXD) — quiet and fast
Stabilisation None None
Burst Rate N/A N/A
Battery Life N/A N/A
Weight 290g 335g
Dimensions 65.4mm diameter × 76.8mm length 73mm diameter × 86.2mm length
Weather Sealed No Yes
Viewfinder N/A N/A
Screen N/A N/A
Mount 55mm filter thread 67mm filter thread
Memory Cards N/A N/A
Connectivity N/A N/A

Suitability by genre

Genre 18-50mm f/2.8 DC DN Contemporary11-20mm f/2.8 Di III-A RXD
Travel
9.0
—
Street
9.0
—
Portrait
7.0
—
Landscape —
9.0
Astrophotography —
9.0
Architecture —
9.0
⚡ Compare specs side by side 18-50mm f/2.8 DC DN Contemporary prices → 11-20mm f/2.8 Di III-A RXD prices →

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