Tamron 20-40mm F/2.8 Di III VXD (Model A062) vs Sigma 24-70mm F2.8 DG DN | Art 019

Side-by-side comparison from our catalogue data. Better values are highlighted only where a clear difference exists.

Tamron

20-40mm F/2.8 Di III VXD (Model A062)

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Sigma

24-70mm F2.8 DG DN | Art 019

Verdict at a glance

Tamron 20-40mm F/2.8 Di III VXD (Model A062) is lighter by 465g.
Tamron 20-40mm F/2.8 Di III VXD (Model A062) goes wider (20mm vs 24mm).
Sigma 24-70mm F2.8 DG DN | Art 019 reaches further (70mm vs 40mm).

Specification comparison
Spec	20-40mm F/2.8 Di III VXD (Model A062)	24-70mm F2.8 DG DN \| Art 019
Brand	Tamron	Sigma
Mount	Sony E	Sony E
Type	Zoom	Zoom
Focal length	20-40mm (wider)	24-70mm
Max aperture	f/2.8	f/2.8
Format	full-frame	full-frame
Af motor	VXD	Stepping motor
Weight g	365 (lighter)	830
Filter mm	67	82
Length mm	86.0	124.9
Diameter mm	74.0	87.8
Min focus m	0.17 (closer focusing)	0.18
Blades	n/a	11
Groups	n/a	15
Elements	n/a	19
Max magnification	n/a	0.34

Tamron 20-40mm F/2.8 Di III VXD (Model A062)

A small constant f/2.8 wide-to-standard zoom for full-frame mirrorless from Tamron, covering 20-40mm. It uses VXD linear motors and weighs about 365 g.

Pros

Constant f/2.8
Compact at about 365 g
VXD linear motors

Cons

Short zoom range
Not as wide as 16mm or 14mm options

Sigma 24-70mm F2.8 DG DN | Art 019

Sigma's f/2.8 standard zoom for full-frame mirrorless in the Art line, with a dust- and splash-proof structure. It covers 24-70mm and weighs about 830 g.

Pros

Constant f/2.8 across 24-70mm
Dust- and splash-proof structure
Close focus to 0.18 m

Cons

Heavier than an f/4 zoom
No optical stabilization in the lens

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