Compare lenses

Sony FE 28-70mm f/2 GM vs Tamron 28-75mm f/2.8 Di III RXD

The Sony FE 28-70mm f/2 GM and the Tamron 28-75mm f/2.8 Di III RXD side by side, computed from this guide's catalogue.

Which to pick

Pick the Sony FE 28-70mm f/2 GM if you want a brighter f/2 (1.0 stops more light), for dim light and softer backgrounds. Pick the Tamron 28-75mm f/2.8 Di III RXD if you want a lighter lens (550 g against 918 g).

Still torn? Ask the guide about the Sony FE 28-70mm f/2 GM and the Tamron 28-75mm f/2.8 Di III RXD

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 28-70mm f/2 GM	Tamron 28-75mm f/2.8 Di III RXD
Maker	Sony	Tamron
Focal length	28-70mm (zoom)	28-75mm (zoom)
Full-frame equivalent	28-70mm	28-75mm
Maximum aperture	f/2brighter	f/2.8
Made for	Full frame	Full frame
Mounts	Sony E	Sony E
Stabilised	no	no
Autofocus	yes	yes
Zoom range	2.5×	2.7×
Weight	918 g	550 glighter
Cameras it fits	41 in this guide	41 in this guide

Focal range, in full-frame terms

Sony FE 28-70mm f/2 GM: 28-70mm.

Tamron 28-75mm f/2.8 Di III RXD: 28-75mm.

Aperture

Sony FE 28-70mm f/2 GM: f/2 wide open.

Tamron 28-75mm f/2.8 Di III RXD: 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.