Basic Televisi, Film and Photography
soft news in moment
January 10, 2012
Facilities in the hard light (Fresnel lens)
The lens
works
of
light
refraction
on
the
curved
front and back
and
focus the light
into the middle
,
so that the
light
grew stronger
and
without
the
influence
by the
distance
from the position
of the
lamp
.
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