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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?
related: Review of TG-4 with FD-1, teardown of LG-1
Some comparisons: FD-1 is compatible with only TG-4 (Firmware update is required) and the TG-5. The shooting distance is 2 - 30 cm and is usable underwater.
LG-1 is compatible TG-5, TG-4, TG-3, TG-2, TG-1. The shooting distance is 1 - 10 cm and is not usable underwater.
A interesting Olympus website is: http://cameras.olympus.com/tg4fd1review/en/ This goes into detail mostly about the FD-1, but there is a bit about the FD-1 vs. FG-1.
