United Kingdom, June 3 -- Mark Strong believes movie cameras peers into actors' souls.

The Kingsman actor, 62, made the statement as he reflected on his acclaimed return to the stage after a decade away from theatre, saying live performance continues to challenge him in ways that film and television cannot.

Mark - who is currently celebrating a Tony Award nomination for his leading role in Oedipus, Robert Icke's modern reimagining of the Greek tragedy - told People at an event in New York: "I hadn't done a play for 10 years. The last time I was here was with A View from the Bridge, which was also Tony nominated."

"Whenever I go away and do film, it's a completely different discipline. The camera's like a microscope. It sees into your s...