What is A Light Meter?
A light meter is a device used to measure the amount of light. In photography, a light meter is often used to determine the proper exposure for a photograph. Typically a light meter will include a computer, either digital or analog, which allows the photographer to determine which shutter speed and f-number should be selected for an optimum exposure, given a certain lighting situation and film speed. Light meters are also used in the fields of cinematography and scenic design, in order to determine the optimum light level for a scene. They are used in the general field of lighting, where they can help to reduce the amount of waste light used in the home, light pollution outdoors, and plant growing to ensure proper light levels.
How To Use Light Meter?
Light meters, whether used in night photography, film photography or even digital photography, can take the guesswork out of your exposures. Many automatic camera users feel that light meters are obsolete; however, automatic cameras only take an average light reading with varying results, where a light meter will read the specific light sources and subjects you are working with. And best of all, they are a snap to use.
1-Set your film speed on the meter itself so that it knows what exposure to read. The ISO, or film speed, determines how fast the film reacts to light. Most light meters will have a small knob or a digital button to change your film speed setting. 2-Take a general light reading for virtually any type of shot by standing near your subject, or in the direction of your subject if shooting landscapes, and point your meter in the direction of your camera's lens. 3-Meter the light falling on your black or white subject to ensure that your photographs have strong whites and strong blacks by . Hold the meter a few inches away from the subject, point towards the subject. This light meter technique is often used to shoot brides in white dresses, snow scenes, black cars and other subjects that greatly contrast from the surrounding scenery. 4-Read the results on your light meter, a numeric value that corresponds to your camera's shutter speed. Adjust the shutter speed dial at the top of your camera, or on the LED screen of your digital camera accordingly for the perfect exposure.
What Are The Functions of a Light Meter?
- Center-weighted metering measures the light in the area to be photographed. It measures the center of the photo most. This gives a light balance more like older cameras, and gives the central image importance in the photo's composition.
- The spot metering function is more like the incident light meter. But rather than focusing on only one area, spot metering allows the photographer to measure the light in several areas of a shot in order to provide the best contrast for her subject.
- Matrix metering is a computerized form of light metering. The meter divides the area to be photographed into dozens of smaller subsections, measures the light in each one and creates a light value based on a mathematical formula.