| The most common type of modern follow-spots has a
lens
system which is similar to that of profile-spots. Follow spots, however, are usually equipped with extremely powerful discharge lamps. |
|
Special
accessories
are added to, or integrated into, follow-spots. These may include: an iris which effects changes of the size of the
beam
as well as straight-edge shutters , a manually operated mechanical color changer, a special stand designed to maintain the stability of the moving follow-spot, and a
mechanical dimmer
(dowser). |
|
Another type of follow-spot has a
parabolic reflector
and no lenses., and is usually equipped with a powerful low-voltage
lamp
. The
beam
produced from this type of follow-spot is extremely narrow, and only slight variation of
beam
angle and diffusion can be effected. Low
voltage
follow-spots are admirably suited to soft-edge follow-spotting from on-stage positions like a portal bridge.
|
