Tamron 12-20mm f/2.8

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Zoom lens

A zoom lens by Tamron for Full frame cameras, 12-20mm f/2.8. A 570-gram constant f/2.8 zoom that reaches 12mm on full frame.

What it frames like

Its full-frame-equivalent focal length on the sensor it was made for.

How wide 12mm sees at its wide end on each sensor it covers.

f/2.8 wide open, to scale against f/1.4.

On full frame (Sony E, Nikon Z): as marked, 12-20mm.
On APS-C (Sony E, Nikon Z): like 18-30mm on full frame; f/2.8 gives about the depth of field of f/4.2 there.