Olympus FD-1 Waterproof Flash Diffuser for TG-4 & TG-5 Cameras Improved light distribution makes your subject stand out Perfect for capturing moving subjects up close and for shooting underwater macro Features a light intensity adjustment lever that allows you to either high or low output Illumination distance 2 to 30 cm Although the FD-1 will attach to the TG-1/2/3, some features are not fully supported