The Ray Flash Universal Ringflash Adapter ($139.95) is an imposing accessory, but one that's quite useful. The big device clamps onto the front of a flash, redirecting its output to surround your lens. The light illuminates photos more evenly, eliminating shadows behind portrait subjects and making macro images pop. And the use of a dedicated camera flash provides more power than inexpensive LED ring lights, like the Photojojo Oh! Wow.. If you're looking to add a ring light to your gear bag, and already have a good external strobe, consider the Ray Flash as an alternative to buying costly models from Canon ($549) or Nikon ($489.95).

The Ray Flash itself is a purely mechanical device, with no need for batteries. It consists of an adjustable clamp that latches onto an external camera flash. It directs light down to a large circular disc that surrounds your lens. A thick rubber band is included to keep the flash head at a slight upward angle. You'll need to take some care in attaching the device, as you must thread it around the lens and then attach the clamp to your flash. It extends down quite a bit beyond the bottom of the camera body, so you won't be able to set it down flat on a table.