I am looking for recommendations for led ring light for my coin photograph, I use a Panasonic Lumix 4/3 model . I know the camera size does not really matter but can anybody suggest a brand or model? Amazon seem to have selections from cheap to expensive. I am trying to improve the lighting on a few of my coins and Doug had recommended a LED ring light. The coins I am trying to improve my pics for have a dark patina or silvered coins ( Silver coated.) Any advice would be appreciated. Thanks!