REFLECTED LIGHT METER READING VARIATIONS There are variations of light meter readings used to provide accurate light meter readings of different types of scenes.
Reflected Light Meter
Reflected Light Meter is a specific light meter configuration (or type) that directly measures the reflected light from a subject and provides an exposure value in f-stops or foot candles.
Reflector ...
Reflected Light Meter (RLM)
An RLM reads Light that is reflected from a scene. Aim these meters at the subject or scene or a Gray Card from the direction of the camera. Also See: Spot Meter and 18% Assumption*.
Reflected light metering
Method of exposure metering by which the amount of light reflected from the subject is measured.
Reflected light meters are calibrated to give an accurate exposure when pointed at subject with reflectivity somewhere near 18%; the exact value varies and the details are complex.
When using a reflected light meter, the most important source of error is that the subject's reflectance may not match the meter's assumption about the subject's reflectance. Suppose that you're taking individual portraits of Alex and Mia (at right).
All built-in camera meters are reflected light meters. Centerweighted, spot, or multisegment meters read the light reflected from the subject.
When pointed at subject, reflected light meters, whether in-camera or handheld, are calibrated to give an accurate exposure with reflectivity somewhere around 18%; the exact value varies and the details are complex, ...
This is a hand-held incident LIGHT METER, different from a camera's built-in reflected light meter.
 See also: Meter, Photograph, Reflected light, Light, Light meter
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