James D Peterson
This is a great idea for a product, but it does not work as advertised and is poorly made, and I am returning it for a refund. I found three issues very quickly when I tried it out: 1. It claims to provide 7 levels of brightness ranging from full power to 1/64 power in one stop increments. It doesnt even come close to this. It does indeed provide 7 levels, but the range between the highest and lowest is only about 1 stop, greatly limiting the usefulness of this feature. 2. It comes with a set of "step up rings" (misnamed - they are really adapter rings) that match lenses with different filter thread sizes to the mount on the inside of the ring. There are made of flimsy plastic, and are not quite correctly sized to match the stated thread size. So they do not grip the lens well and tend to just fall off during use. 3. The rings mount does not grip the "step up rings" firmly either, meaning that the ring flash rotates freely around the front of the lens while attached. This is bad because it ruins another feature of the device: the ability to flash with only the left or right side of the ring light. Since the ring wont stay put, left and right could just as easily be up and down or somewhere in between. This makes the right or left side flash feature pretty much useless. I will look for a similar product from a different maker in hope that it is designed and built better than this one.