The fibre optic connection is most likely irrelevant
Is the camera itself flash control mechanism
If you fire your camera out of the housing at distance it will give a full blast because it is aware of the weakness of the internal flash. Basically it works as per design there is little light you get a full blast
Is the camera itself flash control mechanism
If you fire your camera out of the housing at distance it will give a full blast because it is aware of the weakness of the internal flash. Basically it works as per design there is little light you get a full blast