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Cinema Final > Cinema Final > Flashcards

Cinema Final Flashcards

(57 cards)

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1
Q

Persistence of Vision

A

Multiple images blend into a single image in the human mind to create the illusion of motion

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2
Q

Phi Phenomenon

A

The apparent motion caused by a changing static image

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3
Q

Beta Movement

A

The apparent motion between different light sources that are periodically switched on

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4
Q

Flicker Fusion

A

The ratio which flickering light appears as a constant source

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5
Q

Additive Colors

A

Mixing Color Light - R+B+G = White
R+G = Yellow
R+ B = Magenta
G+B = Cyan

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6
Q

Subtractive Colors

A

Mixing of paints, dyes, inks and natural colorants

MYC = Black

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7
Q

Rods and Cones in eyes

A

Humans have trichromatic color vision.

3 Cones are Red, Blue and Green

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8
Q

Analogous Colors

A

Colors that sit next to each other on the color wheel

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9
Q

Tertiary Colors

A

Subtle Colors achieved by mixing a primary and secondary on the color wheel

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10
Q

Complementary Colors

A

Colors diagonally opposite one another on the color wheel.

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11
Q

Achromatic Colors

A

Colors lacking strong chromatic content. Complementary colors cancel each others hues producing achromatic colors

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12
Q

Color Temperature

A

Lower Kelvin = Warmer Light
Higher Kelvin = Cooler Light
Tungsten 3200K
Daylight 5600K

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13
Q

Tungsten

A

Used indoors turning yellowish-orange light, white in the image

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14
Q

Daylight

A

Used outdoors with sunlight the image will appear white

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15
Q

Exposure Triad

A

ISO, Aperture and Shutter Speed

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16
Q

ISO = Noise

A

higher ISO = higher grain
smaller grain = sharper
larger grain = noisy

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17
Q

Shutter Speed = Motion Blur

A

Fast S.S. = Freeze Time (less light)
Slow S.S. = Motion Blur
(more light)

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18
Q

Shutter Speed formula

A

(shutter opening/360)*(1/frame rate)

Typical film S.S = 1/48 at 180 degrees

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19
Q

F-Stop

A

The ratio of the focal length to the diameter of the lens opening.
F-Stop = focal length/aperture diameter

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20
Q

Exposure determined by..

A

shutter speed, aperture or ISO

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21
Q

Cinematographic shutter speed is a factor of…

A

Shutter angle and frame rate

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22
Q

Perceived Motion

A

Frame rate and projection speed dictate perceived speed of motion.

Standard projection rate = 24fps

Formula = projection rate/camera frame rate

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23
Q

Slow Motion

Study These Flashcards
A

Overcranking

Achieved by filming at faster rate, projecting @ slower rate or time stretching

24
Q

Fast Motion

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A

Undercranking

Achieved by filming at a slower rate or projecting faster

25
Quantity of Light
Amount of light determines exposure settings | Light meters measure quantity of light
26
Incident light
The amount of light falling on an object or subject | - Measured at the subject with an incident light meter
27
Incident Light Meter
Reads the light falling on the lumisphere in foot-candles or lux
28
Footcandles
The illuminance cast on a surface by a one- candle source from 1 foot away
29
Reflected Light
Amount of light being reflected off a subject | - Measured using a spot meter
30
Spot Meter
Measures light reflected off a particular part of a subject. Measured in Exposure Value (EV)
31
Quality of Light
Cannot be scientifically measured. Based on size in relation to distance from subject Larger source= softer light smaller source = harsher light
32
Hard Light
Displays a distinct well-defined shadow
33
Soft Light
Displays a fuzzy or non-existent shadow
34
Scrims, flags and nets
change quantity of light not quality
35
Contrast Ratio
Difference between brightest and darkest area of image. Expressed as 2^x x = # of stops difference
36
Waveform Monitor
Displays the brightness/luminance of an image
37
Vectorscope
measures color info in an image
38
Golden Ratio
``` # signified by greek symbol phi Ratio that divides a frame into a series of rectangles that proportionally relate to the next larger rectangle in a endless sequence ```
39
Center Framing
Uses vanishing point to direct an audience's eyes via the lines of the image
40
Convex
Bulging outward from lens
41
Concave
Depressed into lens
42
Planar
Flat surface
43
Positive/convergent
light rays are refracted + converge onto a focal point BEHIND the lens
44
negative/divergent
light rays after passing through the lens appear to emanate from a particular point on the axis IN FRONT of the lens
45
Refractive Index
Measure of how much the speed of light is reduced inside the medium
46
Refraction
Light rays change direction when they cross the interface from air to the material
47
Reflection
Light that reflects partially from surfaces that have a refractive index different from their surroundings
48
2 most common aberrations
- Spherical | - Chromatic > failure of a lens to focus all colors to the same convergence point. Fixed with a achromatic doublet
49
Barrel Distortion
Effect of an image which has been mapped around a sphere or barrel
50
Normal Lenses
Approximate the same field of view as average human vision
51
Field of View
the extent of the observable world that is visible to your camera.
52
Wider Focal Length
decreased magnification | expanded background
53
Telephoto focal length
increased magnification | compressed background
54
Depth of Field
The part of an image that is in acceptable focus IN FRONT of the lens
55
Depth of Focus
Area that is in acceptable focus BEHIND the focal plane
56
Hyperfocal Distance
Point of focus where everything from half distance to infinity falls within depth go field. Determined by f-stop, focal length and circle of confusion
57
Adjusting Depth of Field
``` 1. Aperture (wider = shallow DoF) 2. Focal Length (wider = deeper DoF) 3. Camera-Subject distance (closer = shallow DoF) 4. film/sensor/mediu, size (larger = shallow DoF) ```

Cinema Final (1 decks)

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