The rl-130 from studioking is a universal 5w lamp with a cri value of 90+. thanks to the included adapters, you can easily attach the rl-130 to your camera lens. by pressing the buttons on the left and right side of the ring lamp, you can simply click the ring lamp on the adapter ring. the rl-130 has a color temperature of 4800k. the controller can be placed on your camera's hotshoe. use the buttons and the screen to control the rl-130. for example, you can choose a mode in which the leds burn continually and a mode where the leds light up briefly when a picture is taken. optionally, you can only turn on the left or right half of the rl-130. the brightness of the leds can also be adjusted. a blue and orange ring are included for a warm and cold color temperature. the rl-130 is powered by four aa batteries (not included). Usage rl-130 There are several situations where you can use the rl-130, in particular while taking macro photos. because the leds are around the lens, shadows in your picture are minimized. the included adapters are suitable for lenses with a diameter of 40.5mm, 52mm, 55mm, 62mm, 67m, 72mm and 77mm. Caution! the flash capability of the rl-130 cannot be used with the cameras listed below. Differences rl-130, rl-160 and mrc-80fv The rl-130 is a simple ring lamp, used only for close-up pictures. in addition to the continuous mode, there is also a mode in which light is emitted only when taking a picture, but this light is not fiercer than the usual continuous illumination. with the mrc-80fv there is a real flash visible, while making a photo. the rl-160 is the most powerful of the three, and also has the largest range. the rl-160 transmits only continuous light. therefore, no separate controller is required. all equipment, including the batteries, is incorporated into the ring. check the other two ring lights at the optional accessories.   rl-130 rl-160 mrc-80fv power 5w  10w   3,7w color temperature 4800k   5600k  5500k number of leds 46  160  80  continue light yes yes   yes flash light yes no yes separate controller (on the hotshoe) yes  no  yes  power source 4x aa-battery 6x aa-battery or wall socket 4x aa-battery