The Bolt VM-110 LED Macro Ring Light is a compact LED ring light that is ideal for use when photographing close-up subject matter. It features a 48 LED array and has an effective working distance of 4.9' / 1.49m with a guide number of 15' / 4.57m (ISO 100). The continuous light source helps you easily see the effects of the lighting and also enables its use when recording video. Four clip-on diffusers are included to further adjust the quality of light from the ring light: clear, frosted, amber, and blue. The brightness can also be modified, from -1.5 to + 1.5EV, and you can set the light to illuminate from only the left or right side for added dimensionality when shooting. Additionally, to help conserve battery power, the light can be set to work in flash mode, which will turn on the light for approximately a half second each time the shutter is released.