Here's a tricky one .
I need ideas on how to trigger a time slice rig at a particular time, the shutter release has to fire off all cameras the microsecond that a gun is fired.
I've run some trials on my rig today. Ok, fine, plenty to do to tune it, but heading in the right direction, I tried it with just six cams, enough to identify what needs to be sorted.
One of the things I want to film is a little video article about Field Target Shooting, another hobby of mine. And I want to expand the time slice thing to the 'bullet time' variant to include a travelling 'bullet' in super slomo whilst the time slice effect is occurring. Nothing new there, same-oh thing that we've seen before, but at least this is an element in a structured film, rather than for the sake of it, which is what seems to be around the most.
So, the scene is our target shooter with his Carlos Fandango Rifle in a typical standing position, like this:
In an ideal world the background will be a total black, so I'll be trying my hand a green screen. The shooter will bring the weapon down to aim, and the time slice will start as the rifle is fired (these Pre Charged air rifles do show a marginal muzzle blast in some conditions, but I'll create a slightly more visible synthetic one with a little talc or chalk powder in the silencer, for the record this type of rifle can be fired without a load ['dry fired'], but not too many times).
At the same time a 'pellet' will be leaving the barrel, the view arcs around to the point just past the firing line to the last time slice cam (there will be 24 cams in an approximate 90 degree arc, so about a second has past). The camera will then switch to live video which pans to follow the pellet as it passes real close and on to the target, perhaps the video cam will follow the pellet all the way to the target.
Ok, so, how do I time the shutter release to the muzzle blast? At the moment all I can think of is a microswitch on the gun trigger, positioned so that the trigger discharges the gun then hit's the switch, which should give enough time to eject the powder, it is all microseconds though.
Unless someone else can come up with something?
For the record, I've given myself a year to suss this video.