This capture exploits the beauty of a digital viewfinder, in my opinion. While looking through the viewfinder of my Olympus OM-D E-M5, I did not see the direct optical view of Perry, but the digital representation that the sensor sees. It was obvious that Perry's face was underexposed due to the bright background, I did not have to wait to chimp a captured image. Seeing the underexposed face I simply used my right index finger to adjust the exposure compensation wheel to 1+ compensation. Immediately the exposure looked correct in the viewfinder and I captured the image.
Bob