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You adjust them when you mount them. But if you want cameras that you can move with a remote, or with the app on your smartphone, you're looking at spending more money. You can get a 4 set wired camera system for $200 at Walmart, Sam's Club, Costco, MicroCenter, and Amazon. If you just want one wireless camera check out the Zmodo on Amazon. You can get a set of 4 for about $100. They're decent cameras for what you're trying to do
