A photographer walks into a bar and orders a drink. As he's sitting there, he hears two people talking at a nearby table.

One person says, "Did you hear about the new camera that has F-stops that go all the way up to 64?"

The other person scoffs and replies, "Psh, that's nothing. My camera has a shutter speed so fast it can steal your Bluetooth headphones before you even hear the click."

The photographer can't help himself and leans over to their table. "Excuse me," he says, "but those features are actually completely unrelated. F-stop controls the depth of field, shutter speed controls the..."

Before he can finish, the first person interrupts him and says, "Hey, why don't you go focus on your drink instead? We're having a light-hearted conversation here."