The Perfect Lens for Portraits This bright large aperture F1.7 lens pulls in a lot of light and produces a beautiful bokeh background defocus effect for more impressive, creative shots. Together with the 42.5mm mid-telephoto focal distance (35mm camera equivalent: 85mm), this lens is ideal for portraits. Optical Image Stabilizer - Lumix Power O.i.s Large aperture lenses produce a desirable shallow depth of field effect, but even a slight handshake can cause out-of-focus problems. However, the Lumix Power O.i.s. (Optical Image Stabilizer) compensates quickly for super clear shots even when shooting in low-lit situations. Fast Auto Focusing - 240 fps Drive Capability The lens and camera communicate at up to 240 fps to take maximum advantage of the cameras high-speed Af system. Its inner focus drive system and stepping motor is smooth and silent during both photo and video recording.