Recently we reviewed the Cactus LV5 laser triggers. This opens up the world of high-speed photography for the masses, but now there is a product that might make it even easier. The Triggertrap Flash Adapter connects your flash with your mobile phone in order to bypass the shutter lag of your camera.
For 30 dollars you are able to buy the hardware needed to connect the current Triggertrap Dongle to your flash and trigger it using the available app. For people that would like to experiment with high-speed photography this is a very appealing offer. Triggertrap claims to “simplify high-speed photography for all skill levels.”
The app in combination with the flash adapter has a delay of 5 milliseconds — very fast compared to the shutter lag of DSLR cameras, which are often slower than 50 milliseconds. Using a smartphone as trigger to fire the flash makes it easier to set up the trigger versus using dedicated hardware. The flash can be triggered by a variety of sources, including vibrations and sound, which are measured by the connected smartphone.
The device itself looks like a little hot shoe adapter on which two flashes can be connected. (Indeed, you can buy similar generic adapters on eBay for about £7. —Ed). The reason for doing so is to increase the power of the flashes while keeping the flash duration short. When shooting high-speed photography you want to keep the flash duration as short as possible to freeze the action, and low power settings on speedlights have shorter flash durations.
Underneath there is a movie made by Haje Jan Kamps that shows how the Triggertrap Flash Adapter works and why you need a flash trigger for high speed photography:
If you want to try high speed photography and have a smartphone, this seems like a very good product to try. The Triggertrap Mobile costs $29.99 for the dongle and cable, plus about $30 for the flash adapter. Visit the Triggertrap web site for more information.