Panasonic 35-100mm F2.8 OIS is an Auto Focus (AF) Telephoto Zoom lens with FourThirds max sensor coverage. When mounted on a FourThirds sensor camera, it will give you an FF equivalent focal range of 70 - 200mm. With a max aperture of f2.8, this lens is fast on wide end and equally fast at 100mm with a max aperture of f2.8.
This lens features on optical image stabilization which helps capturing sharper images at lower shutter speeds. Panasonic 35-100mm F2.8 OIS is weather sealed which makes it an ideal lens for outdoor use, especially when coupled with a weather sealed camera body.