Panasonic 14-42mm F3.5-5.6 II OIS is an Auto Focus (AF) Standard Zoom lens with FourThirds max sensor coverage. When mounted on a FourThirds sensor camera, it will give you an FF equivalent focal range of 28 - 84mm. With a max aperture of f3.5 at 14mm, we can not consider this lens fast on wide end and neither at tele end with its f5.6.
This lens features on optical image stabilization which helps capturing sharper images at lower shutter speeds. Panasonic 14-42mm F3.5-5.6 II OIS is not a weather sealed lens, so you have to be extra careful against rain and dust. Panasonic replaced the older Panasonic Lumix G Vario 14-42mm F3.5-5.6 ASPH OIS with this model. Follow the link to read our detailed comparison of these model: Compare Panasonic Lumix G Vario 14-42mm F3.5-5.6 II ASPH Mega OIS vs Panasonic Lumix G Vario 14-42mm F3.5-5.6 ASPH OIS