You already have found the light meter, and it works much like your old camera, not much confusion here. However modern digital cameras, offers a very powerful new way of checking the exposure of your images. The build-in Histogram, shows you the accurate amount of light and dark pixels in your picture. Represented in a easy to understand graphic display. This is a tool which have never before been available to photographers on location. This is also one of the features there seems to be a good deal of confusion about.