Using the Light Meter
Reflective-light meter
It can be pointed at only one point of the scene to represent as a whole light for an average; the light value does not indicate the various amounts of light in different parts of the scene.
Incident-light meter
We can measure the light in specific areas. The meter indicates precisely how the light is increasing or falling off. If we walk through the scene with the activating meter button, we can see the light is above or below the desired amount.
Evaluating Existing Light
The measurement and transmission of light is based on halves and doubles.
To evaluate a scene, we can use an incident-light meter to measure the light falling on different objects and areas then fill the lights.
-For evaluation purposes, you can go through this scene and group the objects and areas in terms of the amount of light falling on them.
-Adding the light intensity at the point that we want to get a normal exposure, the other will be added light intensity in different value according to the light measurement values.
- The 640 fc of the shaded building converts to f/16. If we want the shaded building to expose normally, we can shoot at f /16. Anything at 2,560 fc is going to translate to f/32. The 80 foot- candles on the person in the room translate to 1/5.6. If you wanted the person to expose normally, you would shoot at f/5.6.
- Another way is filling the other areas to get the light normal exposure.