Satechi has just started shipping the new Smart Trigger, a US$44.99 Bluetooth add-on that makes it simple to turn your iOS device into a timer remote for your DSLR.
Design
The Smart Trigger comes in five different versions, all of which work with a specific set of DSLRs. For my test, I was using a Canon EOS Rebel T4i camera, which used the "C" variant of the device. Strangely enough, there's nothing on the outside of the box that indicates exactly what camera it's supposed to work with
The device includes a small receiver powered by a pair of AAA batteries that sits in the hot shoe mount on your cam
