High-speed photography/video needs
lighting levels that are much higher than normal photography. Users should understand that
the lighting intensity of continuous lighting (flood or spot lights) is measured
by the lumen rating of each lamp and combined with the efficiency rating of
its reflector. The wattage rating for a given lamp, is not a measure
of lamp performance, it is only a measure of power consumption. For
example, there are many different lighting fixtures that use 1,000 watt
lamps, but the output efficiency of these lamps will vary by 100% or
more. Selecting the correct lighting fixture for a specific high-speed
application assures that: (1) the available light will be focused on
the subject to be photographed and not on areas outside the camera's
field-of-view. (2) Maximum lighting efficiency will be produced from
the amount of electrical power consumed.
Adherence To The Above Guidelines will:
1. Reduce the quantity of lighting fixtures
for a given job.
2. Reduce power consumption.
3. Lower ambient temperature in the test area.
4. Lower the cost of lights and power.
The following are typical off-the-shelf continuous lighting fixtures
that are recommended for both large and small area illumination requirements.
An LED stroboscope is included for synchronized pulse
lighting for high-speed video applications.
ProCan III Short:
Uses PAR-64 sealed beam 1,000 watt tungsten-halogen
lamps with four interchangeable beam angles from very narrow spot to
wide-flood. Available with 120 VAC or 230 volt
lamps.
Source Four PAR:A
new generation tungsten-halogen fixture using a 575 watt lamp and an
innovative reflector design with interchangeable lenses
for very-narrow spot to wide-flood beam angles. Produces
about 90% illumination level of the PAR-64 at 60% power
consumption. Available with 120 or 230/240 volt lamps.
Pallite VIII:A
ring light using eight (8) ELH 300 watt tungsten-halogen projection lamps at 120
VAC. Designed for high-intensity close up applications. Can be mounted with the camera lens in the center of the
ring for shadow less lighting in a confined area. Supplied with dual cooling fans.
Mini-Cool:Small
fixture using one 300 watt ELH tungsten-halogen 120 volt lamp.
Designed for lighting small areas in inaccessible locations. Flexible
mounting and other accessories are available.
VideoStrobes:Are
a Hyge and specialized white LED light source designed to illuminate small
areas with high levels of stroboscopic illumination. These short
pulses of light are synchronized with high speed color and monochrome
cameras. A camera sync signal triggers the videoscope to flash once
each frame at speeds up to 4,000 frames-per-second. The exposure
intensity remains the same on each video frame and at all camera speeds. The
flash duration is adjustable from 10 to 500 micro-seconds per flash.
These short pulses of light freeze the motion of fast moving objects and
result in blur-free video images that are clear and sharp in continuous
playback or stop and single frame modes.
