I agree with Inchoateknowledge. If I might add, to me, this kind of sentences are very similar, yet pretty different when looking from the "describer" point of view.
He is eating candies.
He has been eating candies.
The first one, it is being decribed that he is eating candies at the moment and the scenery is not being played out in a continuing stream of events.
The second one, in a continuing stream of events, it is being described that he is has been eating candies.