Compare lenses

Sigma 100-400mm f/5-6.3 DG DN OS Contemporary vs Sony FE 100-400mm f/4.5 GM OSS

The Sigma 100-400mm f/5-6.3 DG DN OS Contemporary and the Sony FE 100-400mm f/4.5 GM OSS side by side, computed from this guide's catalogue.

Which to pick

Pick the Sigma 100-400mm f/5-6.3 DG DN OS Contemporary if you want a fit on more cameras (97 against 41 in this guide) and a lighter lens (1140 g against 1840 g). Pick the Sony FE 100-400mm f/4.5 GM OSS if you want a brighter f/4.5 (0.3 stops more light), for dim light and softer backgrounds.

Still torn? Ask the guide about the Sigma 100-400mm f/5-6.3 DG DN OS Contemporary and the Sony FE 100-400mm f/4.5 GM OSS

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
Spec	Sigma 100-400mm f/5-6.3 DG DN OS Contemporary	Sony FE 100-400mm f/4.5 GM OSS
Maker	Sigma	Sony
Focal length	100-400mm (zoom)	100-400mm (zoom)
Full-frame equivalent	100-400mm	100-400mm
Maximum aperture	f/5-6.3	f/4.5brighter
Made for	Full frame	Full frame
Mounts	Sony E, L-Mount, Fujifilm X	Sony E
Stabilised	yes	yes
Autofocus	yes	yes
Zoom range	4.0×	4.0×
Weight	1140 glighter	1840 g
Cameras it fits	97 in this guidefits more cameras	41 in this guide

Focal range, in full-frame terms

Sigma 100-400mm f/5-6.3 DG DN OS Contemporary: 100-400mm.

Sony FE 100-400mm f/4.5 GM OSS: 100-400mm.

Aperture

Sigma 100-400mm f/5-6.3 DG DN OS Contemporary: f/5 wide open.

Sony FE 100-400mm f/4.5 GM OSS: f/4.5 wide open.

Each opening drawn to scale against f/1.4: a smaller f-number lets in more light and blurs the background more.

Field of view

How wide each sees, at each end, on the sensor it was made for.

Cameras they fit

41 cameras in this guide take both, so either works on the same body. In all, the Sigma 100-400mm f/5-6.3 DG DN OS Contemporary fits 97 and the Sony FE 100-400mm f/4.5 GM OSS 41.