June 2013 - Check out the StopShot Studio - a 12 channel computer controlled version of StopShot
April 2013, Capture insects in flight with our new portable Insect Rig.
January 2013 - Check out our new Water Valve Mounting Bracket for multiple colored collisions
December 2012 - Introducing the Shutter Support System. Completely portable high speed.
October 2012 - Check out our latest one of a kind product - the High Speed Shutter - finally you can capture insects in flight.
August 2012 - Take your StackShot into the field with our new Controller Carrier Also works great with StopShot.
February 2012 - See our new web page on creating Three Drop Collisions with StopShot.
January 2012 - Check out our latest sensor the RangeIR. Designed for birds and wildlife.
November 2011 - Power your StackShot or StopShot longer in the field with our new Li-Ion Battery Pack
Sound Activated Triggering
By connecting a microphone to StopShot you can trigger on anything that makes noise. StopShot has a gain control on it to allow the microphone sensitivity to be adjusted. Some examples of pictures that were triggered by sound are shown below. After the trigger is first sensed you can program StopShot to fire the flash or shutter with virtually any delay you wish.
Using StopShot with a microphone is very easy. Simply plug the microphone into the microphone jack and plug the camera or flash into trigger 1. Using the UP button adjust the delay for trigger 1 according to your setup. You can see a diagram below of what the StopShot display will look like. In this case StopShot is programmed to wait 5mS before it fires the camera or flash. 5mS is 5/1000 of a second or 0.005s. This would be a good starting point for capturing a balloon in the middle of popping. Start with the gain in the middle position and adjust it clockwise if you need the microphone to be more sensitive or counterclockwise if you need it to be less sensitive.
|Trigger 1:||5.0 mS|
Shutter lag can be a huge factor when using sound as a trigger. The shutter lag of a high end DSLR is around 50 mS. This is way too much lag to capture many noisy events. Balloons popping, bulbs smashing and cork popping are all examples of events that will be over by the time the camera gets around to actually taking the image. The fix for this it to shoot in a darkened room and have StopShot fire the flash instead of the camera. You will have to hold the shutter of the camera open when creating the event.
Another thing to keep in mind when using sound as a trigger is that sound moves slow... really slow in terms of high speed events. Consider a balloon popping, it takes around 10mS to completely deflate. Sound moves at about 340m/s. If you take your first shot with the microphone at 0.5m and then move the microphone to 1.5m for the next shot you just added 3.4mS of delay to when the flash fires. Your balloon shot goes form being mid pop to completely over by the time the flash fires.
Below are some examples of what is possible with sound triggering. Click on the image to see a larger version.