Contrast Adjustment
The contrast button is used to adjust the contrast of the image produced by the
camera. Press the button and hold it until the desired contrast is achieved, then
release the button. Clicking the button once will not affect the contrast. If you
continue to hold the button in, you will see the contrast change from low to high
and back to low contrast continuously until the button is released. This
continuous loop is depicted in the following diagram:
Contrast adjustment is most useful when there is not much difference between
the light and dark portions of a picture. Increasing the contrast allows for a
greater difference between the lights and darks in the picture and makes colors
more vibrant.
Back Light Compensation
Back light compensation (BLC) is used to maintain the correct amount of light
exposure for the image. When in the ON position, BLC will adjust the camera so
that the targeted (centermost) object will appear to be properly lit in the picture
.
In situations where there is a very bright light source, such as a window or a
lamp directly behind or beside the object targeted for the camera picture, the
object can appear dark or even in silhouette. By switching the BLC ON and
aiming the camera directly at the darkened object, the camera will adjust the
lighting appropriately and clarify the object.