Midterm Exam

Question 0

Aperture, Shutter Speed and ISO numbers

Answer 0

On the printed chart

Question 1

What are the camera shooting modes?

Answer 1

You vs. Camera controls

Question 2

3 Things that control Depth of Field

Answer 2

Notecard

Question 3

Where to use Camera Meter?

Answer 3

This will give the correct exposure for the scene

Question 4

Human eyes: Cornea

Answer 4

Chart

Question 5

Human eye: aqueous humor

Answer 5

chart

Question 6

Human Eye: Iris

Answer 6

chart

Question 7

Human Eye: Lens

Answer 7

Chart

Question 8

Human Eye: vitreous humor

Answer 8

chart

Question 9

Human Eye: Macula

Answer 9

chart

Question 10

Hue

Answer 10

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

Question 11

Saturation

Answer 11

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)

Question 12

Brightness

Answer 12

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.

Question 13

Meaning of RGB

Answer 13

Red, Green, Blue

Question 14

What does Additive mean?

Answer 14

colors added together create pure white

Question 15

What happens if there is an absence of Additive Colors?

Answer 15

Pure black

Question 16

What is the color model of Additive Colors?

Answer 16

Light

Question 17

Applications of RGB

Answer 17

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

Question 18

What is CMYK?

Answer 18

Cyan, Magenta, Yellow, blacK

Question 19

What does Subtractive mean>

Answer 19

colors taken away create pure white

Question 20

Combination of Subtractive Colors?

Answer 20

pure black

Question 21

CMYK Applications

Answer 21

Traditional and Digital Printing

Question 22

What is Refraction?

Answer 22

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

Question 23

Formula for Index of Refraction

Answer 23

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

Question 24

Speed of light

Answer 24

~300 m/s

Question 25

Speed of Light in water

Answer 25

~2.25 million m/s

Question 26

What light have high energy wavelengths and bend more?

Answer 26

Violet light

Question 27

What light have lower energy wavelengths and bend less?

Answer 27

Red Light

Question 28

What is total internal reflection?

Answer 28

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

Question 29

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

Answer 29

the focal length

Question 30

What is Blackbody Radiation?

Answer 30

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

Question 31

How is the spectrum of light temperature measured?

Answer 31

Kelvin

Question 32

What are Fluorescent Light bulbs filled with?

Answer 32

gaseous Mercury

Question 33

Incandescent Light bulb Color Temp?

Answer 33

2700K

Question 34

Fluorescent Light correlated color temp?

Answer 34

5000K

Question 35

What does LASER stand for?

Answer 35

Light Amplification by the Stimulated Emission of Radiation

Question 36

What are the applications of Lasers?

Answer 36

Barcode scanners, DVD players, surgery, and military

Question 37

What does LED stand for?

Answer 37

Light Emitting Diode

Question 38

How efficient is LEDs?

Answer 38

Uses 85% less energy used than incandescent light

Question 39

What are LED applications?

Answer 39

Billboards, Household lighting, Electronic displays

Question 40

What is light?

Answer 40

The natural agent that stimulates sight and makes things visible

Question 41

What kind of form is Light?

Answer 41

Electromagnetic Radiation

Question 42

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

Answer 42

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

Question 43

What is a Particle?

Answer 43

Wave duality of Light

Question 44

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

Answer 44

See the light wave on the Light PP

Question 45

Why is the Sky Blue?

Answer 45

See Light PP

Question 46

Why is the Sunset red?

Answer 46

See Light PP

Question 47

Explain the science behind Autumn Colors.

Answer 47

See Light PP

Question 48

What does the Shutter Speed do?

Answer 48

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

Question 49

What does a Fast Shutter Speed do?

Answer 49

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

Question 50

What does a Slow Shutter Speed?

Answer 50

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

Question 51

How to perform Panning?

Answer 51

Moving the camera along with the subject

Question 52

What is the general guideline for hand holding?

Answer 52

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

Question 53

What does Polarization refer to?

Answer 53

the oscillation of the energy field within a plane

Question 54

How is light from common sources unpolarized?

Answer 54

They have electric and magnetic fields that are randomly oriented

Question 55

What are common light sources with unpolarized light?

Answer 55

Sun Light Bulbs Fire

Question 56

Other than being a particle, light consists of what?

Answer 56

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

Question 57

What does a dichroic material do?

Answer 57

Selectively absorbs light with the electric field in certain directions.

Question 58

What are some dichroic materials?

Answer 58

Tourmaline Herapathite Polarizer/Polaroid filter

Question 59

How is Dichroic materials similar to a picket fence?

Answer 59

Allowing vertical oscillations through but not vertical ones

Question 60

How much light does an ideal polarizer transmit?

Answer 60

Half the light

Question 61

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

Answer 61

T

Question 62

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

Answer 62

It will cut the intensity of light

Question 63

How does polarization by scattering work?

Answer 63

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

Question 64

How do 3D Movies and TV work?

Answer 64

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

Question 65

What is Aperture?

Answer 65

Controls the amount of light that enters our camera

Question 66

What does Aperture also control?

Answer 66

Depth of Field

Question 67

What is Depth of Field?

Answer 67

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

Question 68

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

Answer 68

Small aperture opening | e.g. f/22

Question 69

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

Answer 69

Large aperture opening | e.g. f/1.4