How does the TTL light meter work? Exposure metering mode

Nikon patents update #2 (light meter, phase detect sensor, collapsible lens, fuel cell, 3D) - Nikon Rumors

DSLR camera metering for beginners! — Lisa Ramsay NYC Photographer

Metering Modes and Light Meters, Digital Camera Know-Hows, Digital Camera, Digital AV, Support

Using Light Metering Modes To Get Camera Exposure, by Vincent T., High-Definition Pro

Back to Basics (Episode 6): Metering Light, by Philippe Dame

What is exposure? How to use light meters in film photography - EMULSIVE

TTL/SPOT prism viewfinder - (95Kb) - Arax

What is exposure? How to use light meters in film photography - EMULSIVE

How to Use a Light Meter, Part One: What is the Light Meter