Olympus OM T28 Macro Twin Flash 1, with Macro Flash Shoe Ring, T Power Control 1, in excellent condition and in original boxes with instructions. The T28 Macro Twin Flash 1 is one of 4 macro flash units for the Olympus OM cameras that use the T Power Control 1 and provide automatic exposure using the camera’s TTL flash control, so that you do not need to calculate the additional exposure required by magnification. It has 2 flash heads, and these are normally attached to the Macro Flash Shoe Ring that fits the filter mount of most of the Zuiko macro lenses.