Fast all around zoom covering all focal lengths between 35mm and 150mm. The Samyang AF 35-150mm F2-2.8 FE has a maximum aperture of F2 at its widest and F2.8 at the telephoto end which covers the five main focal lengths (35/50/85/135/150). Impressive bokeh with a bright F2-F2.8 aperture - the large aperture of the AF 35-150mm F2-2.8 FE presents an attractive background blur to the image's out-of-focus areas. Enhanced Functionality with custom switch & buttons - The two round buttons made of soft rubber have a focus save function which can store 2 points of focus. In addition three custom mode switches on the lens can be pre-programmed via the optional Lens Station allowing you to set up the mode to suit your preference. Fast and accurate AF performance with optimized features for video shooting - Features include: Dolly Zoom Shot Cinematic Video AF Linear MF Focus Control and Digital Par-Focal Features weather sealing at 11 spots on the lens to protect from light dust rai