Tamron 17-28mm f/2.8 Di III RXD vs Sigma 10-18mm F2.8 DC DN | Contemporary 023

Pick the Tamron 17-28mm f/2.8 Di III RXD if

• You need more reach: 28mm vs 18mm at the long end
• You shoot full frame: the Sigma 10-18mm F2.8 DC DN | Contemporary 023 is made for APS-C
• You care about the shape of out-of-focus highlights: 9 aperture blades vs 7
• Our notes say it suits: Interiors and real estate, travel

Pick the Sigma 10-18mm F2.8 DC DN | Contemporary 023 if

• You want the lighter lens to carry: 165 g lighter (255 g vs 420 g)
• You want a wider view: 10mm vs 17mm at the wide end
• You shoot close-ups: it focuses down to 0.12 m vs 0.19 m
• You want bigger close-ups: 0.25× vs 0.19× maximum magnification
• You want a compact lens: 64 mm vs 99 mm long
• Our notes say it suits: Vlogging, real estate

Our notes

Tamron 17-28mm f/2.8 Di III RXD

A compact wide-angle zoom for Sony full-frame mirrorless with a constant f/2.8 aperture. It weighs about 420 g and takes 67mm filters.

Pros

• Constant f/2.8 across the zoom
• Small and light
• Standard filter thread

Cons

• Limited zoom range
• No stabilization in the lens

Our notes

Sigma 10-18mm F2.8 DC DN | Contemporary 023

A wide-angle f/2.8 zoom for APS-C mirrorless from Sigma's Contemporary line. It weighs about 255 g and focuses as close as 0.116 m.

Pros

• Constant f/2.8
• Compact at about 255 g
• Close focus to 0.116 m

Cons

• Limited zoom range
• No stabilization