... Manually-set power output (you ... ... to turn the power off and on ... ... the AF- assist beam emitter on ... In either case, you can adjust the power ratio only between groups A and B. Group C is independent of A and B, and is best used for background or accent lighting, rather than lighting the main subject. ... You can use Flash C.Fn 10-1 to change this to 10 minutes to conserve receiver unit battery power .
|