Neewer NW-14EXT Macro Ring Lite - Flash and LED for Canon Powerful Xenon flash guns around ring with LED modelling / focussing lights. Used, Like New Adapter Rings for 77mm 72mm 67mm 62mm 58mm There are two flashes, one on either side. You can set the power from 1/1 to 1/128 for the flashes independantly, or both simultaneously. There is also a ratio mode that will set the power ratio between the two sides, from 8:1 to 1:8. There are also two LEDs between the rings, one on top & one on the bottom. These can be activated by pushing a button on the flash to provide focusing assistance in dimly lit locations, allowing auto-focusing faster
