The O-Ring Flash Adapter pairs with certain Canon and Nikon camera models. This device does not use any high-tech gadgets. In fact, it works with a simple system for propagating the light from the flash. Instead, it just implements the laws of physics to reflect. Additionally, it focuses the emitted light by using precisely designed prisms and reflectors. In fact, this clever system of internal prisms makes this flash adapter one of a kind. The fact that it has no circuits also makes the entire adapter super easy to use. It’s more of a great accessory for photographers. As a matter of fact, the adapter is also portable. This adapter is simply perfect for everyday use. You can carry it around wherever you go. Overall, this works as a great solution for photographers.