KR 90 Ring Light from Kaiser provides users with an even light source well-suited for close-up photography. The three-chip high performance LEDs have a rated illuminance of 153 fc at 1' and have an angle of coverage of 110° for working with a wide range of lenses and subjects. Also, users can get as close as 1.2" to their subjects. An adjustable power output dial is located on the rear. The ring is constructed from an aluminum alloy for durability and features an integrated rechargeable Li-ion battery with a 2 hour runtime at full power. The light can be mounted either to a standard 1/4"-20 tripod thread or a lens with a 77mm filter thread. Adapters for lenses with 52mm, 58mm, 62mm, 67mm, and 72mm threads are included along with a bag, quick charger, and car charger.