3. Selecting suitable method for reading. Use average brightness method when
scene has no outstanding or dark area and no details are required for special
Take reflected readings from camera position or near-object
a. Use brightest-object method when both the brightness of the darkest
object and the average brightness of the scene are below range of light meter,
when complete detail in the brightness portion of the scene is required and
when light reading of the brightest object is required to determine the average
brightness of a scene. Hold meter close to the brightest object in which full
detail is desired. Disregard incidental bright spots such as a window in an
interior scene or a patch of bright sunlight in an otherwise shaded area.
b. Use a reflected light reading when most important object in a scene is
very dim or has adjacent reflections or bright spots unrelated to the subject
and when a light reading of the darkest object is required to determine the
average brightness of the scene. The method may be used for any scene.
c. Use the substitution method when it is impractical or impossible to
take reflected light readings from the near-object position because the actual
objects or most important are inaccessible.
Take reflected readings from
nearby objects that are lighted in the same manner as the inaccessible objects.
Be sure the substitute object and actual object are lighted in the same way.
4. A light meter will last for a long time if you do not drop it or abuse it.
Consider the following:
a. Always handle meter correctly since quality of video depends on correct
(1) Do protect meter from bumping against other objects. Carry meter in
your pocket or camera case when not in use. The meter case is not adequate in
(2) Do not subject photoelectric cell to extreme light intensities.
These intensities cause indicator needle to bounce at the high end of the scale
and eventually cause damage.
(3) Do not subject the meter to extreme hot or cold.
b. Care in arctic areas.
Extreme cold, i.e., subzero temperatures, and
sudden changes in temperature, are both detrimental to the mechanism of the
(1) Protect meter by placing meter inside jacket or in a packet and
store in a warm but not hot place after use.