A:AnswerYou will need some sort of mount. The bottom of the light has a universal tripod mount so you could look for some kind of mount that includes a standard tripod mount and is able to be hooked up to the mac.
A:AnswerYes you can use it with an iPhone. I'm unsure if you can get a case or something to be able to attach this light to the iPhone, but the light can be used off camera independently with an iPhone.