
I bought this for an old Canon Rebel and I love it. This is absolutely essential for long exposures, shop promotions or any other commercial shot that needs crystal clear focus. The switch has a fairly long cord (about a meter) and only one button. Press the button to take a shot, or hold it down to take a series of shots. This device cannot be connected to a phone because the jack is smaller than the 3.5mm headphone jack. However, because it plugs into an outlet, no batteries or replacement parts are required. Plug it into the appropriate camera port and it's ready to go in no time.

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