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Photography > Midterm Exam > Flashcards

Midterm Exam Flashcards

0
Q

Aperture, Shutter Speed and ISO numbers

A

On the printed chart

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1
Q

What are the camera shooting modes?

A

You vs. Camera controls

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2
Q

3 Things that control Depth of Field

A

Notecard

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3
Q

Where to use Camera Meter?

A

This will give the correct exposure for the scene

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4
Q

Human eyes: Cornea

A

Chart

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5
Q

Human eye: aqueous humor

A

chart

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6
Q

Human Eye: Iris

A

chart

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7
Q

Human Eye: Lens

A

Chart

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8
Q

Human Eye: vitreous humor

A

chart

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9
Q

Human Eye: Macula

A

chart

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10
Q

Hue

A

The dominant wavelength in the visible spectrum. What we consider a specific color

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11
Q

Saturation

A

The purity of a specific hue. ; Saturated color has its intensity concentrated near the dominant wavelength. Unsaturated coloe includes contributions from other wavelengths (e.g. white light)

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12
Q

Brightness

A

The overall intensity of a hue. ; How bright or dim the hue is from the source. This is sometimes referred to as value or brilliance.

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13
Q

Meaning of RGB

A

Red, Green, Blue

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14
Q

What does Additive mean?

A

colors added together create pure white

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15
Q

What happens if there is an absence of Additive Colors?

A

Pure black

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16
Q

What is the color model of Additive Colors?

A

Light

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17
Q

Applications of RGB

A

LCDs, TVs, Monitors, Traditional Color Photography, Digital Photography

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18
Q

What is CMYK?

A

Cyan, Magenta, Yellow, blacK

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19
Q

What does Subtractive mean>

A

colors taken away create pure white

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20
Q

Combination of Subtractive Colors?

A

pure black

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21
Q

CMYK Applications

A

Traditional and Digital Printing

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22
Q

What is Refraction?

A

The change in direction of a wave due to a change in the transmission medium

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23
Q

Formula for Index of Refraction

A

n= speed of light in a vacuum (or air)/ speed of light in medium

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24
Q

Speed of light

A

~300 m/s

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25
Q

Speed of Light in water

A

~2.25 million m/s

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26
Q

What light have high energy wavelengths and bend more?

A

Violet light

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27
Q

What light have lower energy wavelengths and bend less?

A

Red Light

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28
Q

What is total internal reflection?

A

Refractive property that allows light to “bounce: and travel within a pipeline. i.e.: fiber optics

29
Q

What is the distance from the lens to the focal point called?

A

the focal length

30
Q

What is Blackbody Radiation?

A

The theoretical electromagnetic energy within or surrounding a body in thermodynamic equilibrium

31
Q

How is the spectrum of light temperature measured?

A

Kelvin

32
Q

What are Fluorescent Light bulbs filled with?

A

gaseous Mercury

33
Q

Incandescent Light bulb Color Temp?

A

2700K

34
Q

Fluorescent Light correlated color temp?

A

5000K

35
Q

What does LASER stand for?

A

Light Amplification by the Stimulated Emission of Radiation

36
Q

What are the applications of Lasers?

A

Barcode scanners, DVD players, surgery, and military

37
Q

What does LED stand for?

A

Light Emitting Diode

38
Q

How efficient is LEDs?

A

Uses 85% less energy used than incandescent light

39
Q

What are LED applications?

A

Billboards, Household lighting, Electronic displays

40
Q

What is light?

A

The natural agent that stimulates sight and makes things visible

41
Q

What kind of form is Light?

A

Electromagnetic Radiation

42
Q

What is the difference between Ultra Violet Light and Infrared Light?

A

Ultra Violet Light is Higher Energy while Infrared Light is Lower Energy

43
Q

What is a Particle?

A

Wave duality of Light

44
Q

What are Max. Positive Field Strength, Zero Field Strength, and Max. Negative Field Strength?

A

See the light wave on the Light PP

45
Q

Why is the Sky Blue?

A

See Light PP

46
Q

Why is the Sunset red?

A

See Light PP

47
Q

Explain the science behind Autumn Colors.

A

See Light PP

48
Q

What does the Shutter Speed do?

A

Controls the amount of light entering our camera. The SS are units of time (fractions of seconds/seconds) the shutter curtain remains open.

49
Q

What does a Fast Shutter Speed do?

A

Freezes Motion e.g. 1/30, 1/15. 1/8

50
Q

What does a Slow Shutter Speed?

A

Blurs Motion e.g. 1/30, 1/15. 1/8

51
Q

How to perform Panning?

A

Moving the camera along with the subject

52
Q

What is the general guideline for hand holding?

A

Find the bottom shutter speed number closest to the focal length of your lens

e.g,
85mm lens= 1/125 sec
50mm lens= 1/60 sec

53
Q

What does Polarization refer to?

A

the oscillation of the energy field within a plane

54
Q

How is light from common sources unpolarized?

A

They have electric and magnetic fields that are randomly oriented

55
Q

What are common light sources with unpolarized light?

A

Sun
Light Bulbs
Fire

56
Q

Other than being a particle, light consists of what?

A

Electric and Magnetic Fields, and are oscillating planes that are perpendicular to one another

57
Q

What does a dichroic material do?

A

Selectively absorbs light with the electric field in certain directions.

58
Q

What are some dichroic materials?

A

Tourmaline
Herapathite
Polarizer/Polaroid filter

59
Q

How is Dichroic materials similar to a picket fence?

A

Allowing vertical oscillations through but not vertical ones

60
Q

How much light does an ideal polarizer transmit?

A

Half the light

61
Q

T/F Light reflected from non-metallic surfaces (water,glass,snow) is usually partially polarized

A

T

62
Q

Other than altering the look of the image, what will a polarizer filter do?

A

It will cut the intensity of light

63
Q

How does polarization by scattering work?

A

Gas molecules in the atmosphere scatter light in all directions. Air molecules that scatter light will polarize sunlight perpendicular to its direction of proagation

64
Q

How do 3D Movies and TV work?

A

The Movies and TV polarize two two simultaneous projections at right angles and 3D glasses have lenses aligned to each polarized projection

65
Q

What is Aperture?

A

Controls the amount of light that enters our camera

66
Q

What does Aperture also control?

A

Depth of Field

67
Q

What is Depth of Field?

A

The distance between the nearest and the furthest objects that are in focus in an image

68
Q

What do you need to do to achieve Great Depth of Field?

A

Small aperture opening

e.g. f/22

69
Q

What do you need to do to achieve Shallow Depth of Field?

A

Large aperture opening

e.g. f/1.4

Photography (1 decks)

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