Sigma 70-300mm f/4-5.6 DG Macro vs Tamron 100-400mm f/4.5-6.3 Di VC USD

Both are Sony A lenses. Here is what actually differs.

Sigma

Pick the Sigma 70-300mm f/4-5.6 DG Macro if

You need ⅓ stop more light for low light or background blur (f/4 vs f/4.5)
You want a wider view: 70mm vs 100mm at the wide end

Pick the Tamron 100-400mm f/4.5-6.3 Di VC USD if

You need more reach: 400mm vs 300mm at the long end
You shoot handheld in dim light or video: it has optical image stabilization and the Sigma 70-300mm f/4-5.6 DG Macro does not

Spec differences

12 differences

Specifications that differ between the Sigma 70-300mm f/4-5.6 DG Macro and the Tamron 100-400mm f/4.5-6.3 Di VC USD
	Sigma 70-300mm f/4-5.6 DG Macro	Tamron 100-400mm f/4.5-6.3 Di VC USD
Brand	Sigma	Tamron
Type	Macro	Telephoto Zoom
Format	Full frame	not listed
Focal length	70-300mm	100-400mm
Max aperture	f/4 ⅓ stop faster	f/4.5
Weight	545 g	not listed
Filter thread	58 mm	67 mm
Max magnification	0.25×	not listed
Aperture blades	9	not listed
Optical design	14 elements / 10 groups	not listed
Autofocus motor	in body	USD
Image stabilization	No	Yes stabilized

2 identical specs hidden: mount, min focus distance. Show all

Mount: Sony A both
Min focus distance: 1.5 m both

Our notes

Sigma 70-300mm f/4-5.6 DG Macro

The Sigma 70-300mm f/4-5.6 DG Macro is a full-frame macro zoom lens covering 70-300mm at f/4-5.6 for Sony A mount cameras. It is intended for close-up work with small subjects such as flowers and insects.

Our notes

Tamron 100-400mm f/4.5-6.3 Di VC USD

Tamron 100-400mm f/4.5-6.3 Di VC USD: a full-frame telephoto zoom lens with a 100-400mm focal length and a maximum aperture of f/4.5-6.3, made for Sony A mount cameras, with Vibration Compensation. The range suits sports, wildlife, events and portraits.