It was probably done with a remote camera, no one would purposely put theirselves in harms way for a picture, and that probably took a dozen or so shots the get a perfect one like that one. And tarantulas couldn't kill you, as their venom isn't at all that potent. It's a fluid that melts the innards of it's victims, and turns it into a juice. The spider then sucks up the whatever-it-killed juice, and that's how they get nourishment. There is no way a spider could pack enough venom to do that to a human being.