Compare lenses

Tamron 16-30mm f/2.8 Di III VXD G2 vs Tamron 20-40mm f/2.8 Di III VXD

The Tamron 16-30mm f/2.8 Di III VXD G2 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 Tamron 16-30mm f/2.8 Di III VXD G2 if you want a wider view (from 16mm equivalent). Pick the Tamron 20-40mm f/2.8 Di III VXD if you want more reach (to 40mm equivalent) and a lighter lens (365 g against 440 g).

Still torn? Ask the guide about the Tamron 16-30mm f/2.8 Di III VXD G2 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	Tamron 16-30mm f/2.8 Di III VXD G2	Tamron 20-40mm f/2.8 Di III VXD
Maker	Tamron	Tamron
Focal length	16-30mm (zoom)	20-40mm (zoom)
Full-frame equivalent	16-30mm	20-40mm
Maximum aperture	f/2.8	f/2.8
Made for	Full frame	Full frame
Mounts	Sony E, Nikon Z	Sony E, Nikon Z
Stabilised	no	no
Autofocus	yes	yes
Zoom range	1.9×	2.0×
Weight	440 g	365 glighter
Cameras it fits	57 in this guide	57 in this guide

Focal range, in full-frame terms

Tamron 16-30mm f/2.8 Di III VXD G2: 16-30mm.

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

Aperture

Tamron 16-30mm f/2.8 Di III VXD G2: 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

57 cameras in this guide take both, so either works on the same body.