Sony 85mm Full Frame, F1.4, G Master Lens Designed and built to the strictest precision standards, this lens offers magnificent imaging performance throughout the frame, right up to its widest F1.4 aperture setting. An XA (extreme aspherical) element with 0.01 micron surface precision contributes to previously unachievable resolution and stunning bokeh for new expressive potential. Three ED glass elements support the lens’s outstanding resolving power by suppressing chromatic aberration and minimising artificial colouration throughout its aperture range. Two position sensors enhance the accuracy of an SSM (Super Sonic wave Motor) drive system for autofocus performance that fully supports the lens’s high-resolution capability. A focus mode switch, focus hold button, and aperture ring with switchable click stops provide professional control for a wide range of shooting situations. The zoom feature of the camera provides a higher magnification zoom by combining various zoom features. You can use other zoom features when you set the Zoom Setting to something other than the Optical zoom only. Depending on the type of lens used, the Zoom function can be called up differently. When using Powered zoom lenses - the Zoom function can be called up by sliding the zoom lever on the lens. When using Manual zoom lenses and Prime lenses - the Zoom function can be called up by going through the Menu and under the Camera Settings or by assigning the Zoom function to one of the customisable buttons. The assigned button must be pressed each time the Zoom function will be used. The default setting for the Zoom Setting is Optical zoom only. The default setting for Image is [Large]. To use the smart zoom change Image to [Medium] or [Small]. Zoom functions other than the optical zoom are not available when shooting in the following situations: Sweep Panorama. Smile/Face Detect. is set to Smile Shutter. Image Quality is set to RAW or RAW & JPEG. Image Record Setting is set to 120p 50M/100p 50M. You cannot use the Smart Zoom function with movies. When a power zoom lens is mounted, you cannot use Zoom under MENU. If you enlarge image past the optical zoom range, the product automatically switches to another Zoom function than the optical zoom. When you use a Zoom function other than the optical zoom, Metering Mode is fixed to Multi. When you use another zoom function than the optical zoom, the following functions are not available: Face Detection, Lock-on Auto Focus, Image Auto Object Framing.