lighting: operation

1
lighting operation safety

• Presented by
• SFU Surrey Campus Library
• Warren Bandzmer

2
before.borrowing.lighting.kits

• Complete online quiz
• Score 100
• Based on material in this workshop

3
quartz.halogen.vs.incandesent.lighting

• both operate on the same principle electric
  current passes through a thin tungsten metal
  filament causing it to heat white hot and emit
  light
• However, quartz halogen lamps encase the filament
  in a quartz casing filled with halogen gas. This
  allows these bulbs to run hotter, brighter and
  whiter.

4
lighting.kits.for.loan

• Lowel ViP Pro-light
• low-level key or accent light, fill light (with
  diffusion), or back-light for interviews other
  small shooting-areas
• 250w 120v
• Max. 8.3 Amps
• Power cable 4.88 m long
• Ianiro Varibeam (Red Heads)
• 1000w 600w
• Spot-flood rear knob
• Head cable 3.50 m. long
• 4 leaf barn doors with gel clips

5
lighting.kits.for.loan

• Lowel VIP V-light

• 500w 120v
• accommodates gel frame and
• umbrella.
• wide-angle smooth light is
• useful for broad key or fill.
• 4.88 m long cable

6
extras.you.can.supply

• Wooden clothes pegs for fastening gels, foils,
  etc.
• Sandbags for weighing down lighting equip.
• Practical lighting from the hardware store
• utility lights aluminum reflectors, ceramic
  sockets
• windshield sunscreen as a reflector
• foam core white board
• Leather gloves for handling bulbs

7
safety.first

• Check all equipment for damage before operating
• Tape down all cables (Gaffer's tape)
• Use at least 14 gauge electrical extension cords
• Use ONLY in dry locations
• Always open barn doors before turning lamp on
• Never look directly at lamps
• Never pick up and move a lamp stand while the
  lamp is on
• Do not operate the lamps pointing up or down at a
  very steep angle (greater than 60 degrees) from
  the horizontal
• If smoke appears around the lamp or cable, turn
  off the lamp and return it to the library

8
hot.lamps

• These lights can get very hot!
• Use only approved accessories, e.g. gel frames
• Only use approved bulb replacements and do not
  touch the new bulbs (oil from your skin can cause
  them to explode when heated)
• Keep all subjects/objects minimum 2 meters away
• Keep lamps and cables at least 6 meters away from
  any flammable materials such as gas or oil
• subjects/objects WILL be affected by lights
• Do not touch the lamps without gloves for at
  least 20 minutes after turning off
• Wait at least 10 minutes after turning lights off
  before disassembling

9
electrical.safety.official

• How to find the draw on a circuit
• Draw (amperage) total power (watts)/voltage
• e.g. draw 1000 watts/120 volts 8.3 amps
• Using this formula, do not load a circuit more
  than approximately 80 of its maximum
• e.g. most household circuits are rated at 15
  amps
• 15 amps x 80 safety factor 12 amps therefore
  do not use more than 12 amps

10
electrical.safety.simpler

• An alternate formula, with a safety factor built
  in draw total power / 100
• e.g. draw 1000 watts / 100 10 amps
• Using this formula, the 80 safety factor is
  built in so any circuit supporting at least 10
  amps is fine for lamps totaling a1000 watts
• Note the total power consumed is the sum of all
  the lights on one circuit, so add together the
  watts for multiple lights
• e.g. 600 watt light 1000 watt light 1600
  watts
• 1600 is too much power for one household circuit,
  so split the load onto different circuits

11
activity inventory.check

• Whats in the kit?
• A set of 2 or 3 lamps
• Two or three sets of barn doors
• Two or three light stands
• Operation and safety guide
• Gaffer's tape/duct tape
• Leather gloves
• Spare bulb
• Gel frame in Lowel kits only

• Whats not in the kit
• Gels
• Weights e.g. sandbags
• Umbrellas, reflectors, gobos
• 14 gauge power extension cables

12
activity

• assembly.and.setup

13
assembly.and.setup

• Procedure
• Assemble your lighting kits according to the
  instructions
• Recall what you learned about safety and
• Configure the lighting kits according to the
  3-point lighting diagram to the right
• After your set-up is checked by your instructor,
  disassemble and return your lighting kits

14
three.point.lighting

• Position your key light 15 to 45 off the
  subject-camera axis, and raise it approximately
  30 from the horizontal.
• Always loosen the T-handle and thumb-screw locks
  on the lights before making adjustments.
• Place the fill on the opposite side of the camera
  from the key. It doesnt have to be equal
  distance.
• The fill can be physically lower than the key,
  and is usually lower in intensity as well.
• Use some diffusion gel on your fill light
• The back light can be positioned opposite the
  key, or directly behind the subject. Raise it
  high enough to get the rim lighting effect you
  want. You may have to hide the stand in some
  cases.

15
Online Quiz

• www.lib.sfu.ca/about/surrey/equipment.htm
• Lighting kit workshop and quiz

16
Questions?

• Contact the Library Media Technicians
• lib-surrey_at_sfu.ca
• 604-268-7411
• Contact Warren Bandzmer, Campus Media Technician
• Available in the Library 1200 130 daily
• help-surrey_at_sfu.ca
• 604-268-7490