Tamron 28-300mm f3.5-6.3 VC PZD is an Auto Focus (AF) SuperZoom lens with 35mm FF max sensor coverage. When mounted on a 35mm FF sensor camera, it will give you an FF equivalent focal range of 28 - 300mm. With a max aperture of f3.5 at 28mm, we can not consider this lens fast on wide end, and it is slow at the tele end with its max aperture of f6.3.
This lens features on optical image stabilization which helps capturing sharper images at lower shutter speeds. Tamron 28-300mm f3.5-6.3 VC PZD is not a weather sealed lens, so you have to be extra careful against rain and dust.