I'm considering the Olympus TG-4 camera, because it could have a good combination of macro and ruggedness. One of its macro features is that it has got native accessories for ring illumination. There is a somewhat older LG-1
and a newer FD-1
LG-1 looks like a light guide. FD-1 looks like a reflector with a diffuser. Is this a correct guess? How different are they actually? Have they got different pros and cons?