The Nikon SB-500 is a lightweight and very compact shoe-mount flash unit with coverage for a 24mm lens on an FX camera or a 16mm lens on DX camera and combined with 100 lux LED for video light, powered by only two AA-size batteries. SB-500 is a very capable flash with a variable angle 'bounce' head (up to 90 deg.) and rotates 180-degrees for soft lighting effects. The flash is part of Nikon's Creative Lighting System (CLS) with two-group/two-channel control and features the intelligent-TTL (i-TTL) exposure mode.