DESC: Easy two-light on camera TTL flash system - SB-50DX in bounce position and built-in speedlight operating with TTL precision. Wireless Slave Flash with TTL Auto Control. Operates in combination with Nikons built-in SLR speedlights providing increased Power. 3D Multi-Sensor Balanced Fill-Flash. Minus 18 degree tilt position of SB-50DX accommodates AF Nikkor lenses engaged in close-up to a mere 11.8 inches .