You set the camera on a tripod with the flash deactivated and a shutter speed long enough to catch the rider pass through the whole frame - 3-4 seconds I guess.
Then you hold an external flash and manually trigger it when the rider is wherever you want them in the shot. Move away from the camera to prevent backscatter when you do this. Think bouncing off the ground also works well.
how do you do this? i.e. the light trail both in front of and behind the rider and only one shot of the rider.
You set the camera on a tripod with the flash deactivated and a shutter speed long enough to catch the rider pass through the whole frame - 3-4 seconds I guess.
Then you hold an external flash and manually trigger it when the rider is wherever you want them in the shot. Move away from the camera to prevent backscatter when you do this. Think bouncing off the ground also works well.
So, not something I'm gonna do easily with the old point and shoot then.....