Quote Originally Posted by JCPhoto1
The pre flash is to reduce red eye and I don't think you can turn it off on the D70 unless you disable the flash completely. Think about getting the hot shoe adapter that has a connector to attach a sync cable to the strobes. Turn off the onboard flash and use the adapter. It’s a problem with the D70 people have complained about in the past. It’s not a DSLR or SLR problem just a camera specific feature.
The preflash is not for red-eye, it's for measuring the exposure. Digitals prefire to measure the light hitting the subject.