Matching 3d scene lighting with studio shots!

[image90]

Hi there,
Can anybody suggest as to how i can match my 3d scene lighting (which includes HDRI, radiosity lighting setup) with green screen shots of an actor. Iam basically trying to blend a real person in an virtual enviroment. Any suggestion please?

thanks
image

PS
the studio footage shots will be in 2K HD format (uncompressed) :?