Red Filter 37 screws into the housing's port or the camera's lens.

It enhances the quality of both still and video images when not using an artificial light source. Decreases the cyan cast for more natural color and contrast. A great accessory for snorkelers. Use with manual white balance to reduce cyan cast.

It fits the Olympus 14-42mm MkII lens itself. It also includes corded keeper to prevent loss when not in use.