Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This product sucks

I took a risk to save money and ordered a knock-off instead of the real thing. I have a Canon 5D Mark II and attempted to use this remote in order to use the Live View function on the 5D and manually focus on the subject. Anyhow, it rarely set off the shutter. It made me look kind of foolish instead of clients, and was frustrating to use as well. I would not recommend this at all - at least for use with a Canon 5D Mark II. Buy the real deal. I did, after attempting to use this for two different portrait sittings.