Tamron 14-150mm f3.5-5.8 III is an Auto Focus (AF) SuperZoom lens with FourThirds max sensor coverage. When mounted on a FourThirds sensor camera, it will give you an FF equivalent focal range of 28 - 300mm. With a max aperture of f3.5 at 14mm, we can not consider this lens fast on wide end, and it is slow at the tele end with its max aperture of f5.8.
Tamron 14-150mm f3.5-5.8 III is not a weather sealed lens, so you have to be extra careful against rain and dust.