Lighting Final exam
Terms
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- what light receptor in your eye senses contrast?
- rds
- which light receptor in the eye snses color?
- cones
- what does gain do?
- Effects amperage of wave length
- What is the ISO?
- International Standards Organization
- Three ways that light passes through an object
- transparent, translucent, opaque
- What "process" is light
- An additive process. Adding colors gets closer to white.
- what are the 3 colors used on film stock?
- cyan, yellow and magenta
- what is CTO?
- Color temperature orange
- what is CTB?
- Color temp blue
- Tungston lights favor which color temperature?
- orange
- when you shoot in black and white what are you focusing on?
- shadows or contrast
- what does a neutral density do?
- Goes on camera. Used as a last resort because it pulls light down and makes it incredibly soft.
- what is special about the "red camera"?
- It is expensive and has many accessory arms
- what is "vignetting"?
- Whn light bounces around lenses and gets lost. Creates dark corners. Old Timey look.
- what is a practical light?
- A light that is actually seen on the set as a prop piece but is also functional as a light
- How are gels measured?
- In fractions and whole numbrs. They relate to how they affect the aperture
- how many amps stops a human heart?
- .05 amps
- How many amps is a wall outlt?
- 20 amps
- What is the US standard of voltz?
- 110/120 voltz
- What is EU standard of voltz?
- 220 voltz
- what color temperature is sunlight?
- closer to blue than orange
- what are voltz?
- electrical potential
- What are amps?
- amount of current flowing
- what is ampacity?
- amount of current a device can handl
- what is a watt?
- measure of the work done/capacity of a bulb
- What is AC?
- Alternating Current. Generally any thing we plug in is AC
- What is DC?
- Batteries
- what does three phase mean?
- There are 3 hot wires and one neutral
- what kind of power do cameras use?
- Almost always DC bcause it is safer.
- what color is neutral
- white
- what color is ground?
- green
- what color is hot?
- ANY other clor other than white or green
- what is the IATSE?
- International Alliance of Thater/Stage Engineers
- What is the ASC?
- American Society of Cinmatographers
- what is gripping?
- how lights get moved or placed. Also camera movement with dollies or carts.
- what are shunts
- like HUGE fuses for a HUGE circuit breaker. literally large sheets of metal.
- how would you ground something that isn't ground?
- tie to a cold water copper pipe
- If you are measuring a light in K then...
- those are huge bright lights!
- How many watts is a medium light?
- 2000 watts
- If some thing is under 2000 watts it could be considered
- small light or an "inkie."
- what are carbon rods?
- used in projectors. Thre is distance betwen the rods and a plate. They last about 20 minutes.
- what is a ballas?
- it converts AC to DC power
- What is a tungston light?
- glass envelope filled with tungston element. made for tv and then fr movies. filld with xenon gas.
- What kind of lamp is a xenon/tungstn/HMI lamp?
- Arc lamps
- What is an arc lamp?
- When a charge jumps in an arc in a bulb. + anode - is cathode
- what is a parabolic light
- most common on film set. any lamp can go inside parablic. dose not always have a lens. efficient and directional.
- what does PAR stand for?
- Parabolic Alluminizd Reflector
- what is an ellipsoidal light?
- It is narrow. Edge of light varies. Not a parabolic shape...it is more collapsed
- what is a gobo?
- how you can effect lighting and shadows IN the light. It's a kind of filter.
- So what is a PAR light?
- Open faced with no lens. broad spill, no shape real shape.
- The two different lenses that can go on a PAR light are
- convex and fresnel
- In which lights can you use a gobo?
- Leko. Not in a PAR.
- Which company makes most Hollywood lights and coined th stupid nickname?s
- Mole-Richardson Company
- what is a cam lock?
- it has a huge surface area. is connector for distribution boxes.
- what is an edison connector?
- polarized and groudnded. household plugs.
- what are twist lock connctors?
- they are 2 phase, one ground and 2 hots. used for xenons and HMI.
- what are bates/stage pin connectors?
- three pinned stag connector. duh.
- what color temperature is a halogen lamp?
- blue
- What is a century stand?
- Also called a C stand. It is not that flexible but can get put up very fast.
- what is a combo stand?
- more like a tripod. every thing is adjustable. not speedy but mroe accurate.
- what is a scrim?
- can go inside a PAR light. It's a screen that rduces amount of light.
- what are problems with scrims?
- if they are too clos to light than th scrim pattern can be seen. only used to step light down
- what is a chinese lantern used for?
- ambient soft light. powered by fluorescents or small HMI's.
- why doesn't a leko have a lens?
- because it is elliptical already!
- what is back light?
- Light behind the subject or back ground.
- what is background light?
- light that lights up the background
- what is a kicker or three quarter light?
- lights subject from behind at an angle.
- 5 point lighting consists of what
- key, fill, kicker, back light and background light
- what is a big problem with back light?
- it gives lens flare. Effects mood the most.
- What is head light?
- light right above someone's head. This lights their hair and shoulders and is good for glamour lighting
- what light is some times needed becaus we are human?
- eye light.
- Big ways to diffuse light?
- 1. bounce 2. move light/subject 3. dim 4. scrim 5. net 6. frost 7. flag 8. cookie
- what are clothespins called?
- C47's
- What are other names for an extension cord>?
- AC cord/stinger
- how long do you wait for light to cool?
- 20 minutes
- what is a softbox?
- a canvas box that helps diffuse. it is spring loaded. usually used as a fill because it is soft