-
How many stops open is a Filter Factor of 2?
-
How many stops open is a Filter Factor of 4?
-
How many stops open is a Filter Factor of 8?
-
What happens when the voltage drops on a tungsten light?
The color temperature goes DOWN.
-
What happens when the voltage drops for an HMI light?
The color temperature goes up because there is less red.
-
What is the numeric relationship between voltage and color temperature?
- 1volt=10degreesK
- 10volts=100degreesK
-
What are all of the F-Stops?
2, 2.8, 4, 5.6, 8, 11, 16, 22
-
If three 2K lights are used in 6 hours, how many kwhrs is that?
6k X 6hrs= 36kwhrs
-
What is a visual treatment?
A breakdown of the story in terms of visual elements such as color, framing, and camera movement.
-
What is Mired?
- A convenient means for dealing with problems of adjusting from one color temperature to another. Deals in micro reciprocal degrees.
- MIRED=106/k degrees
-
What is the Mired Shift Value?
- The amount of change of color temperature from one source to another.
- (106/T2) - (106-T1)
- delivered source- original source
-
What are light balancing filters for? Name two.
- For warming or cooling to correct slight mismatches.
- 81 (orange) and 82 (blue)
-
What is the brightness range?
The total contrast found in the subject.
-
How do you calculate lighting ratios when the lights overlap?
(key+fill)/fill
-
How do you calculate the lighting ratio when the lights do NOT overlap.
key alone and fill alone.
-
What is the cinematographer's job?
Camera movement and composition
-
What is the GAFFER'S job?
- Head electrician
- Chief lighting technician
-
What is the GRIP'S job?
- Shaping light
- Support (dolly)
- Light construction
-
What is the ELECTRICIAN'S job?
- Distributes power
- Set lights
-
What's a black body?
Something you heat that has no color.
-
What is the color temperature of day?
2,000 - 20,000K
-
Why are fluorescent lights green?
Because they have a discontinuous spectrum.
-
What do BARN DOORS do?
Control Spill
-
What's a SCRIM?
A wire mesh ring that controls intensity.
-
What is a SNOOT?
Cylinder that creates a circle for the light.
-
What is a COOKIE?
A cutout that creates a pattern for the light.
-
What is a GABO HEAD?
The part that sits atop a C-stand and grips equipment.
-
What do FLAGS do?
They block light and create shadows.
-
What are the 3 factors of softness?
- 1- Size
- 2- Distance between light and subject
- 3- type of diffusion
-
What is the standard speed of a motion picture?
1/50 of a second.
-
What is ILLUMINATION?
Light falling on a subject.
-
How do you measure ILLUMINATION?
Illumination= Intensity(candelas)/distance2
-
What is BRIGHTNESS ratio?
Ratio of the brightest significant object to the darkest significant object.
-
What is LIGHTING ratio?
Ratio between key and fill; tells contrast.
-
How many AMPS does a regular household have?
15-20 AMPS
-
How many watts can a 60AMP plug draw?
60A X 100V = 6,000 W
-
What does the GREEN wire represent?
The ground wire.
-
What are the formula relationships between Watts, Amps, and Volts?
-
What does the FILL light do?
Sets the mood and amount of contrast.
-
What effect does a longer wire have on voltage?
It makes less voltage.
-
How many kwhrs comes from running four 2k lights for 8hrs?
4X2X8= 64kwhrs
-
What kinds of power do HMI, halogen, and fluorescent bulbs run on?
- HMI- AC
- Halogen- AC & DC
- Fluorescent- DC
-
What is the scale characteristic of fluorescent light?
It's non-continuous.
-
What is a Color Compensating (CC) filter?
It transmits or absorbs specific wavelengths of light.
- CCR40= .05-.10 is low density
- CCM30= .2-.3 is medium density
- CCY10= .4-.5 is high density
-
What are the families of gels?
- CTO- Color Temperature Orange
- CTB- Color Temperature Blue
-
What temperatures are Tungsten and Daylight balanced to?
-
What is broad key lighting?
Where the key is near the camera.
-
What is narrow key lighting?
Where the fill side is towards the camera.
-
What is the ratio is the exposure is 300FC?
3:1 because the 300 means the key has 200 and the fill has 100 and the formula is (k+f)/f. and (2+1)/1= 3/1
-
What are the four elements of lighting continuity?
- Quality
- Quantity
- Mood
- Direction
-
What is LUMINANCE?
Light that is reflected from an object.
-
What is the formula for measuring light ratios?
(key+fill)/fill
-
What is high key lighting?
Low contrast and low drama.
-
What is low key lighting?
High contrast and deep shadows.
-
What is hard light?
Hard source of light that leaves hard shadows.
-
What is soft light?
Light that wraps well.
-
What are the three wires used in electricity?
- Hot- black, red, or blue
- Neutral- white
- Ground- green
-
What is latitude?
The difference between exposure and brightness range.
-
What is a characteristic curve and what are the parts to it?
- A graph that illustrates how film emulsion reacts to light.
- Dmin
- Dman
- Straight Line (18% grey in middle)
- Shoulder
- Toe
|
|
