The panasonic 425mm f17 lumix g asph power ois is a mid telephoto portrait lens with micro four thirds mount offering a 425mm focal distance 35mm camera equivalent 85mm a fast f17 aperture and a versatile minimum focusing distance of 031m the lens can deliver portraits with a rich stereoscopic effect as well as close ups with a beautiful soft out of focus blur the lens powerful ois optical image stabilisation system effectively compensates unwanted blur caused by camera shak