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What is Parallax > Chapter 2.5 > Flashcards

Chapter 2.5 Flashcards

1
Q
  1. When were the first aerial photographs taken?
    A. In the 1858
    B. In May of 1904
    C. In the 1940s
    D. In the 1920s
A

in 1858, Parisian photographer named Gaspard-félix Tournachon

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2
Q

What are the five basic advantages that aerial photography affords over on-the-ground observation?

A

Improved vantage point, Capability to stop action, Permanent recording, Broadened spectral sensitivity, Increased spatial resolution and geometric fidelity

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3
Q

Who photographed San Francisco
approximately six weeks after the great earthquake and fire

A

George R. Lawrence, in 1900s using Kite Photography

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4
Q

Vertical photograph coincides with the__________
a) Direction of line of sight
b) Direction of lens
c) Direction of aperture
d) Direction of gravity

A

D. The aerial photograph consists of a vertical photograph which is made of the camera axis which is made to coincide with the direction of gravity. Optical axis must be first made straight in order to continue further.

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5
Q

How much inclination must be provided in a tilted photograph?
a) 13˚
b) 20˚
c) 3˚
d) 34˚

A

C. In general, a tilted photograph consists of inclination up to 3˚, which makes it to have an individual tilted scale. It might help in determining the objects which are inclined in the photograph.

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6
Q

If the apparent horizon is shown in a photograph, it is low oblique.
a) True
b) False

A

B. Oblique photograph is used in case of aerial photography, with an intention that the camera axis lies in between horizontal and vertical. High oblique is obtained in case of possessing apparent horizon otherwise it isn’t shown

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7
Q

Perspective projection is produced from__________
a) Straight lines radiating a common point
b) Straight lines radiating different points
c) Parallel lines radiating a common point
d) Perpendicular lines radiating a common point

A

A. The introduction of perspective projection is done by the straight lines radiating a common point and passing through point on the spherical surface. Aerial photogrammetry uses this phenomenon.

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8
Q

What are the main elements of a photographic system?

A

The main elements of a photographic system include the camera body, lens, aperture, shutter, sensor, and image processor.

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9
Q

When was the American ociety of Photogrammetry was established?
a. 1908
b. 1934
c. 2000
d. Yesterday

A

b. 1934

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10
Q

What was the help of stereoplotter in World War II?

A

It aids to make accurate measurements for the war effort

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11
Q

It controls the lens opening
a. lens
b. focus
c. shutter
d. diaphragm

A

d. diaphragm

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12
Q

What is the relationship of focal length to the object and image distance

A

As the focal length of a lens increases, the image distance also increases for a given object distance. This means that the lens has a narrower field of view and can capture a smaller area of the scene in front of it. Conversely, a shorter focal length lens has a wider field of view and can capture a larger area of the scene in front of it.

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13
Q

What is the significance of white balance in a photographic system?

A

White balance helps to accurately reproduce the colors in an image by adjusting the camera’s settings to match the color temperature of the light source.

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14
Q

How do different types of lighting affect the photographic system?

A

Different types of lighting can have a significant impact on the final image, affecting its color, contrast, and overall mood.

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15
Q

What is image stabilization and why is it important in a photographic system?

A

Image stabilization helps to reduce camera shake and blur, resulting in sharper and more stable images. It is especially important in low-light conditions and when using longer shutter speeds.

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16
Q

What is the role of the sensor in a digital photographic system?

A

The sensor converts light into an electronic signal, which is then processed by the camera’s image processor to create the final image.

17
Q

What are some common types of camera bodies in a photographic system?

A

What are some common types of camera bodies in a photographic system?

18
Q

How do different types of filters affect the photographic system?

A

Filters can be used to modify the color, contrast, and other properties of the light entering the camera, resulting in different effects in the final image. Common types of filters include polarizing, neutral density, and color filters.

19
Q

Supposed you are to take a picture in dim light place what setting of camera you should use?
A. Shutter speed at 1/1000 sec, aperture of f/10, ISO 50
B. Shutter speed at 1/2 sec, aperture of f/11, ISO 3200
C. Shutter speed at 1/15 sec, aperture of f/10, ISO 1600
D. Shutter speed at 1/4 sec, aperture of f/2, ISO 400

A

B. Shutter speed at 1/2 sec, aperture of f/11, ISO 3200

20
Q

What happens to the f-stop when lens opening diameter decreases?

A

f-stop number increases, the diameter of the lens
opening decreases and, accordingly, the image exposure decreases.

21
Q

What is the difference between SLR and DSLR Camera?

A

DSLR and SLR cameras both reflect light that enters through the lens using a mirror so that an image can be seen in a viewfinder. However, an SLR camera uses a film made of plastic, gelatin and other material to record the image - a DSLR captures the image digitally, on a memory card.

22
Q

What is the difference between SLR and mobile camere?

A

Although you can change the controls such as aperture shutter speed, and ISO in your mobile cameras but with your phone camera you do it digitally unlike in SLR you have to manually manipulate this adjustments

23
Q

Tor F. Aerial photos are developed in film and stored in archive

A

T

24
Q

What is a resolution in images?

A

Image resolution is typically described in PPI, which refers to how many pixels are displayed per inch of an image.
Higher resolutions mean that there more pixels per inch (PPI), resulting in more pixel information and creating a high-quality, crisp image.
Images with lower resolutions have fewer pixels, and if those few pixels are too large (usually when an image is stretched)

25
Q

What is the difference between the ordinary document paper and the photo printers?

A

The higher the Dots per inch (dpi) the higher the resolution of your scanner

26
Q

What is the function of diaphragm

A

diaphragm controls the diameter of the lens opening during film exposure

27
Q

In the simple camera it controls the duration of exposure

A

Shutter

28
Q

If your shutter speed is fast, what happens to the light ?

A

You get less light, because you have shorter period of time to allow light

29
Q

What happens to the light if your aperture is small or f-stop is high?

A

Less light

30
Q

What is the relationship between f-stop, aperture and exposure ?

A

as the f-stop number increases, the diameter of the lens
opening decreases and, accordingly, the image exposure decreases

What is Parallax (7 decks)

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