For about two years, I happily used an E-P3, which had a built-in flash. I replaced that with an E-M1 after a burglary; that camera, of course, has no built in flash, but does have a little external unit that is somewhat fiddly to attach but is just as good as the built in unit on the E-P3. I am wondering whether it would be worthwhile to invest in a more serious flash. I have tended to prefer natural light photography generally, but am curious as to whether I am missing out on anything significant. The little flash is enough for fill-in use on reasonably close subjects and for lighting snapshots in the dark for reasonably close subjects, but I am interested in what can only sensibly be done with a larger flash gun, such as the FL-600R or one of the Metz units compatible with Micro Four Thirds. Does anyone have any examples of photographs that could not have been taken (or would have looked a lot worse) without a more substantial flash than the tiny in-built or bundled units? I should be interested to see such photographs to see whether those are the sorts of photographs that I am ever likely to want to take. I am also very fond of macro. Generally, I tend to take macro photographs in daylight, but I sometimes take photographs indoors, and have generally used the in-built flash or bundled flash, as in this photograph of a house spider: Domestic house spider by James E. Petts, on Flickr I am also interested in taking macro photographs of butterflies and other such things outside or in a butterfly house in a zoo. How much difference would a ring flash make? Does anyone have any photographs that could not have been taken (or would have looked a lot worse) without a ring flash? I should be most interested.