The camera has changed a lot and one of the changes is that first the colours were black and white but now there every colour(including black and white)! :) :P :D ;)
There are lots of places to get security cameras, it just depends on what you are looking for. Here is a guide to help you decide what you need as well as a place to buy security cameras....
We use cameras everyday taking pictures when we're having a great time or we're going out. We use cameras on special occasions. We even have cameras on our phones because cameras are really important...