It looks like Tamron is taking a leaf out of Sony’s book, claiming records with hidden caveats. First, we had Sony claiming that the A7c was the world’s “smallest and lightest full-frame camera” – which it objectively wasn’t – and then Sony started adding caveats to the claim. Now, Tamron’s doing it with, perhaps not surprisingly, their new Sony E mount 35-150mm f/2-2.8 Di III VXD.
They’re claiming that it’s the “World’s first mirrorless zoom lens with a maximum wide-open aperture of f/2”. And on the surface, the claim is obviously nonsense, because Canon’s got the RF 28-70mm f/2L USM lens, and Panasonic has the 10-25mm f/1.7 and a new 25-50mm f/1.7 zoom on the way. So, yeah, even the manufacturers are clickbaiting these days.