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problems with
fluorescent lighting.
• CCTV is no good unless
you are monitoring it.
• Don't use a motion
detector in the high
traffic area.
• Focal length: field of
view. A lower number
has a wider field of
view.
• F-Stop number: lens
aperture (i.e., the depth
of field). A lower
number means a wider
opening, and more light
enters. A higher
number means smaller
aperture, a stronger
area of focus, and less
light entering.
Therefore, if it is a
smaller aperture, you
will need to make sure it
is well lit.
▪ To monitor multiple locations,
use pan and tilt units, panning
devices, switches, and
multiplexers (multiple cameras
on single videotape).
• Lighting:
