Canon 10-18mm f4.5-5.6 IS STM is an Auto Focus (AF) Wideangle Zoom lens with APS-C / DX max sensor coverage. When mounted on a APS-C / DX sensor camera, it will give you an FF equivalent focal range of 15 - 15mm. With the max aperture of only f4.5 at 10mm, it is considered a slow lens.
This lens features on optical image stabilization which helps capturing sharper images at lower shutter speeds. Canon 10-18mm f4.5-5.6 IS STM is not a weather sealed lens, so you have to be extra careful against rain and dust.