I have just purchased (impulse) a Viltrox JY-670 - Its a Hong Kong import - built well but its not TTL so its 100% manual ! yay fun ! What on earth do I do with the numbers on the back - already ...
Canon produces two macro rings, MR-14EX and MT-24EX, and many other manufacturers also produce such rings. I have a Canon Speedlite 440EX II external flash, which I use when I don't use a tripod for ...
When I last checked years ago, the price of a typical Ring flash unit was approximately $500. Nowadays there are still ring flashes for approx. $500 like Pentax AF160FC, Pentax AF-140C, Canon MR-14EX, ...