Right. No matter what camera you're using, you're still at the mercy of your finger. And the finger is going to introduce a delay that's quite a bit bigger than the shutter lag of the camera--around 2-4 tenths of a second. I'd be very surprised if you could control the timing of that motion to within 20 milliseconds. So time parallax is still bs.
Originally Posted by MattKing
And it isn't about what camera is faster--in fact, the point is that in most cases, it doesn't matter. Most pro-grade cameras, at least, are faster than you are.