Nikon SB-600 AF Speedlight Flash gun

Versatile Remote Speedlight for the Creative Lighting System
Available Options with D2H Pro Digital SLR and D70 Digital SLR: i-TTL Mode, Advanced Wireless Lighting, FV Lock, Flash Color Information and Wide Area AF illuminator
i-TTL Flash control : Accurate, seamless fill-flash capability under the most difficult, tricky lighting situations
FV Lock (Flash Value Lock) allows photographers to change the compostition or zoom for the shot while maintaining desired lighting of the subject
Auto FP High Speed Sync Mode when used with D2H Pro Digital SLR delivers needed fill flash in bright light or with wide aperture Nikkor lenses .