If you're playing Domination and you have 2 flags while you're winning, you can set up around the enemy spawn and kill them when they try to rush for flags, and that's just how the game is played. But if you're losing and you're doing that, it's pretty much camping.

"Capturing A" ...keeps running away from the flag.

Sitting in a corner, usually with a portable radar. = Camping.

Holding off a choke point. = Smart Play.

Camping to me is sitting in a corner or hidden spot with ur sights already drawn waiting for someone to walk by without a sniper class. If ur doing a sniper class then thats not camping its sniping. A sniper is spose to stay hidden under the radar in a spot for a long period of time. I mean think about it how many snipers are on the front lines in war? They can be sitting in one spot for hours upon hours on end.

Camping is sitting somewhere the whole time like a *****. They go like 8-2 and barely contribute to the team. They'd rather pad their k/d instead of trying to help the team win.