The relationship between seeing and hearing is deeply ingrained in humans. When designing the new generation of Tamron  professional camera lenses, we wanted to explore alternative ways  to achieve optimal focus, and our interest in sensory input led us to see if audio frequency can help people to perceive lens erformance. In this experimental display, the sound of Focus I/O is generated as a result of image analysis and the experience is designed to give us simpler and closer awareness of the relationship between visual and audio. This perspective can be adapted to all kinds of outputs, such as art installation, mobile application – looking at the interaction of clear and blurred environments and states of being.