Compare lenses

Sony FE 16-35mm f/2.8 GM vs Tamron 20-40mm f/2.8 Di III VXD

The Sony FE 16-35mm f/2.8 GM and the Tamron 20-40mm f/2.8 Di III VXD side by side, computed from this guide's catalogue.

Which to pick

Pick the Sony FE 16-35mm f/2.8 GM if you want a wider view (from 16mm equivalent). Pick the Tamron 20-40mm f/2.8 Di III VXD if you want a fit on more cameras (57 against 41 in this guide) and a lighter lens (365 g against 680 g).

Still torn? Ask the guide about the Sony FE 16-35mm f/2.8 GM and the Tamron 20-40mm f/2.8 Di III VXD

Specs side by side

Rows that differ are in full colour; the better value is marked where one is better by any measure.
Spec	Sony FE 16-35mm f/2.8 GM	Tamron 20-40mm f/2.8 Di III VXD
Maker	Sony	Tamron
Focal length	16-35mm (zoom)	20-40mm (zoom)
Full-frame equivalent	16-35mm	20-40mm
Maximum aperture	f/2.8	f/2.8
Made for	Full frame	Full frame
Mounts	Sony E	Sony E, Nikon Z
Stabilised	no	no
Autofocus	yes	yes
Zoom range	2.2×	2.0×
Weight	680 g	365 glighter
Cameras it fits	41 in this guide	57 in this guidefits more cameras

Focal range, in full-frame terms

Sony FE 16-35mm f/2.8 GM: 16-35mm.

Tamron 20-40mm f/2.8 Di III VXD: 20-40mm.

Aperture

Sony FE 16-35mm f/2.8 GM: f/2.8 wide open.

Tamron 20-40mm f/2.8 Di III VXD: f/2.8 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 Sony FE 16-35mm f/2.8 GM fits 41 and the Tamron 20-40mm f/2.8 Di III VXD 57.