Why are there multiple models of Ray Flash?
The Ray Flash was designed with an effort to balance convenience and ease of use with the quality and quantity of light produced. These sometimes conflicting goals required design choices that resulted in a product that is lightweight, easy to use, and very efficient. These same design choices also required the manufacture of different Ray Flash models for specific camera and flash combinations. To select a Ray Flash the user must therefore know both the flash and camera model with which it will be used. The adapter at the top of the Ray Flash is molded to fit specific flash heads in order to control the critical distance between the front face of the flash and the top of the light guides. If the distance is too great the light throughput falls off dramatically, and if the distance is too close heat begins to build-up. Secondly, to keep the Ray Flash centered around a camera’s lens the distance between the center of the lens and the hot shoe on a given camera must be taken into account
