The nikon Speedlight SB-600 delivers plenty of style, both in its compact
dimensions and a triangular motif consistent with the nikon D-SLR theme. The
white balance is optimized through the use of flash colour information obtained
by the unit. In addition, it also features FV lock, which gives the user the
convenience of being able to maintain the measured flash value while
recomposing the shot to achieve the appropriate flash output for the subject. A
fantastic tool to illuminate the scene before you.