Jonathan Ross Natal play video released, lag pegged at "a tenth of a second"

As some of you eagle-eyed Twitter-watchers will have noticed yesterday, Jonathan Ross has been playing with Natal. Watch him in action after the break.

Ross was playing a demo set up by Microsoft in London, confirming it wasn't at his house as some thought.

The movie, posted by the UK celeb's son on YouTube, shows "dad" leaping around trying to play the E3 balls demo. It's all a bit elephant-like.

The clue to why may be found in this MTV piece. The author has just played through what looks to be a long sessions with the device, and made a point of timing its lag.

"I had a pretty large sample size, sitting through 5 demos, capturing about 40 different movements from a variety of journalists," he said. "Across those 40 movements, the fastest life-to-screen transition was .08 seconds, while the slowest was .12 seconds. A tenth of a second was the consistent average, though.

"What that means is that, in its current state, Natal is not instant, one-to-one motion capture."

There's a note on the Ross video saying Microsoft assured the family lag issues would be fixed in time for launch.

Imagine us looking at you over the top of half-rim glasses.

Natal ships, super-cheap, at the end of this year.