Sony FE 24-70mm f/2.8 GM vs Sigma 50-120mm f/2.8 DC OS Contemporary

Both are Sony E zoom lenses. Here is what actually differs.

Sony · 2016

FE 24-70mm f/2.8 GM

f/2.8886 g

Check price Full specs

Sigma · 2026

50-120mm f/2.8 DC OS Contemporary

f/2.8390 gLinear motor

Full specs

Pick the Sony FE 24-70mm f/2.8 GM if

You want a wider view: 24mm vs 50mm at the wide end
You shoot full frame: the Sigma 50-120mm f/2.8 DC OS Contemporary is made for APS-C
Our notes say it suits: Weddings and events, portrait and lifestyle work, general professional use

Pick the Sigma 50-120mm f/2.8 DC OS Contemporary if

You want the lighter lens to carry: 496 g lighter (390 g vs 886 g)
You need more reach: 120mm vs 70mm at the long end
You shoot handheld in dim light or video: it has optical image stabilization and the Sony FE 24-70mm f/2.8 GM does not
You shoot close-ups: it focuses down to 0.23 m vs 0.38 m
You want bigger close-ups: 0.33× vs 0.24× maximum magnification

Spec differences

15 differences

Specifications that differ between the Sony FE 24-70mm f/2.8 GM and the Sigma 50-120mm f/2.8 DC OS Contemporary
	Sony FE 24-70mm f/2.8 GM	Sigma 50-120mm f/2.8 DC OS Contemporary
Brand	Sony	Sigma
Format	Full frame	APS-C
Focal length	24-70mm	50-120mm
Weight	886 g	390 g lighter
Length	136 mm	99 mm shorter
Diameter	87.6 mm	66.8 mm slimmer
Filter thread	82 mm	55 mm
Min focus distance	0.38 m	0.23 m closer
Max magnification	0.24×	0.33× larger
Aperture blades	not listed	11
Optical design	not listed	18 elements / 13 groups
Autofocus motor	not listed	Linear motor
Image stabilization	No	Yes stabilized
Weather sealing	not listed	Yes
Released	2016	2026

3 identical specs hidden: mount, type, max aperture. Show all

Mount: Sony E both
Type: Zoom both
Max aperture: f/2.8 both

Our notes

Sony FE 24-70mm f/2.8 GM

Sony's G Master standard zoom for full-frame E-mount, covering 24-70mm at a constant f/2.8. It has a dust and moisture resistant design and no built-in stabilization.