There are some great video tutorials at Triggertrap. This one teaches how to use Triggertrap Mobile to shoot with your camera in Bulb shutter speed setting. Of course, we also like that you can see how the X-Grip phone holder we offer holds their phone in a safe, secure and adjustable way, easily visible, attached to their tripod’s center column. They also have a whole series of video tutorials to help guide you through the many functions of their App + hardware dongle combination at their website.
In the video below, they demonstrate how to shoot using Bulb for your shutter speed. We’re posting this video to give you a first-hand view of how they’re using our RAP-B-121-UN7U The RAM Universal X-Grip Cell Phone Holder and Clamp. The spring loaded X-Grip™ holder expands and contracts, allowing for a perfect custom fit of your cell phone. Designed into the mount is a 1″ diameter patented rubber ball and socket system with adjustment points at the both ends of the socket arm; this with a twist of the arm knob, allows you can move the X-Grip™ mount to your optimum viewing position. Use with iPhone and Android phones. LEARN MORE ABOUT THE X-GRIP PHONE CLAMP HERE.
TAKE A LOOK AT THE ENTIRE TRIGGERTRAP HOW TO USE BULB TUTORIAL HERE.