The new highend expensive 5D Flash unit
 

All jokes aside, I was testing out the crop factor of the GH2 against the 5d, both cameras have a 50mm lens at f2.

Re: The new highend expensive 5D Flash unit
 

Being used to proper grown-up cameras like the 5DII I didn't notice for a week or 2 after I had purchased a GH2 that it actually had flip-out flash unit:-)