Tiffen Lowel Omni-light - Manual (Page 2)

Lowel Omni-light Instructions
The Omni-
light uses
two pin prefocus
tungsten halogen lamps
of different voltages and filament config-
urations. To solve the optical problems most
efficiently, the fixture has two different stan-
dard focusing reflectors. In addition two spe-
cial purpose reflectors are also available. For
identification each has a number embossed
on the reflector.
#1 Standard focusing reflector:
for all voltages.
#3 High intensity, super spot:
long “throw,” non-focusing
reflector for all voltages.
Changing
Omni
Reflectors
When fixture is cool
to the touch.
Disconnect plug on rear of
light. Remove Protective
Screen then remove reflec-
tor retaining spring by first
pulling either end of spring
inward. Focus lamp to spot
position and tilt Omni-light
down slightly. Reflector can be
lifted around the lamp. To install reflector, tilt
Omni-light up, keep lamp focused to spot,
insert reflector around lamp and onto registra-
tion pin. Replace reflector spring and
Protective Screen. Never operate light
without Protective Screen.
Omni Barndoor
Barndoor
frame snaps
onto rim on
front of light. It
can be removed
by pushing out
on two adjacent sides while
pulling that corner forward.
The frame holds any two
accessories, rotates 360°
and joins two snoots.
Large door has two extending
wings which stop in open position,
this stop may be bypassed.
The Triangular door
has two extending wings
to increase their area or
create special shadowing
effects. The Locking Fastener requires 1/4
turn to remove or install doors. If barndoor
frame fails to maintain proper tension on light,
the frame should be removed and squeezed
inward, very slightly.
Omni Barndoor
Accessories
Each barndoor frame can hold any two
barndoor accessories. Handles on the acces-
sories are sprung together to insert or remove
accessory.
First accessory used
should be positioned in rear slots. Second
accessory or snoot can then be used in for-
ward slots.
When a wire scrim and glass
accessory are used simultaneously,
the wire scrim should be placed
closest to the lamp, to reduce the
possibility of glass break-
age.
Full scrim: reduces light
intensity by approximately 50%.
Half scrim: covers half of
reflector and rotates 360°.
Darkens washed out foregrounds,
compensates for talent “burning
up” as they approach a light.
Graduated scrim:
same principle as half scrim
but effect is more gradual and
more extreme.
Cookaloris: produces an overall,
soft shadow pat-
tern, can be used to “breakup”
a plain background.
Snoot: produces a reduced circle of
light; two Snoots may be joined with an addi-
tional barndoor frame to produce a smaller
and sharper circle of light. Barndoors and
barndoor acces-
sories may also be
added to the end of
the Snoot.
Narrow Snoot: produces
smaller diameter circular
cutoff
(2.25" diameter).
Accepts Fren-L
patterns as well
as Pro-light barn
doors & swing-in accessories.
Accessory Front Glass
Instructions & Warnings
These Glass Accessories:
• act as safety shields in the event of
a violent lamp failure
• reduce the harmful effects of UV rays
• are made of Pyrex ® and will break if
dropped or mishandled, care should be
taken to avoid chipping and deep scratch
ing of the glass as this will weaken it
• should be allowed to cool before being
stored or shipped
• should be wrapped for protection when
stored or shipped
• should be used in the forward barn door
frame position (further from the lamp),
if a second accessory (such as a scrim)
is used, place that accessory in the rear
position of the frame (closer to the lamp)
• require when cleaning the surface of the
dichroic filter to avoid damaging the
coated surface
Dichroic filter:
converts 3200K lamps to average
daylight; absorbs U.V. Iight rays
Light loss approximately 65%.
Clear glass filter:
absorbs U.V. Iight rays. Light loss
approximately 5%.
Diffused glass:
softens highlights and shadows.
Absorbs U.V. Iight rays Light loss
approximately 40% in flood
setting.
See www.lowel.com for more information.
Omni Reflectors
Omni Light Controls
The following components are shared
by both the Tota and Omni-lights.
Their attachment may differ slightly
between Tota and Omni, see Tota
instructions for more information.
Umbrellas
Photographic
umbrellas convert
relatively hard
light sources,
such as spot-
lights, into rela-
tively soft sources
that provide soft shad-
ows and highlights. Although not
appropriate for every subject or
mood, the quality of light can be very beauti-
ful. There are two Umbrellas designed for use
with the Omni-light, a woven, soft silver Tota-
brella (T1-25) and a softer white Tota-brella
(T1-26) that produces a softer light and also
may be used as a large diffuser.
Warning: When using umbrella with
Omni, do not focus light to spot.
Warning: When lights with umbrellas are
extended very high, or used on undersized
stands or in areas of heavy “traffic”, it is
advisable to add weight (such as the Lowel
weight) to the base of the stand. This reduces
the chance of lights falling over which could
damage the umbrella, the lamp, and possibly
cause personal injury.
Using Umbrellas
Remove entire barndoor (or just the four flaps
if an accessory such as a dichroic filter
is used). Set gel-brella bracket to umbrella
position (line up arrow guides on back panel).
Insert umbrella through hole until shaft
appears through
opposite hole.
Do not position
umbrella further
into the
fixture than the
automatic stop
(clip) allows, or scorching may occur. Lock
with knob. For best soft-light effect, focus
Omni to full flood position. To prevent dam-
age to umbrella, do not focus to spot or half-
spot position as scorching of the umbrella
may occur. Since the gel frame cannot be
attached when the umbrella is inserted, the
dichroic filter should be used for daylight cor-
rection. When using the DP Umbrella the tilt
tension of the light may have to be increased.
This can be done easily by tightening the nut
located on the stand fitting with a 7/16"
wrench. Do not over tighten! Tota-frame
Set Gel-brella bracket
in gel frame position
(line up guides on
back panel). Unfold
frame, extending frame
bar and insert through
front hole of gel-brella
holder until shaft
appears through
opposite hole.
Lock with knob.
Tota/Omni Shared Light Control Accessories
LOWEL O
LOWELOMNI