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Aesthetics > Photography > Flashcards

Flashcards in Photography Deck (26)
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1
Q

The angle that the lens sees

A

Angle of View

2
Q

Opening in the lens that regulates the amount of light (iris)

A

Aperture

3
Q

Stopping down the aperture … the amount of light (brightness) and … the sharpness (depth of field).

A
  • Reduces
  • Increases
4
Q

Distance between focal point and the lens plane

A

focal length

5
Q

Lenses with shorter focal length are called

A

Macro Lenses

6
Q

The distance between the object and front of the lens

A

Working Distance

7
Q

What does too short of a working distance have some influence on?

A
  • Hygiene Problem
  • Patient Discomfort
  • Image Distortion
8
Q

How does a working distance that is too far affect the image?

A
  • More items will appear in the frame
  • Distrub the point of focus
9
Q

The distance from the nearest to the furthest point of sharp focus

A

Depth of field

10
Q

What does the depth of field depend on?

A

Aperture

11
Q

What are 3 advantages to a Ring Flash?

A
  1. Light surrounds the optical axis
  2. In accessible objects in oral cavities will all be lit evenly
  3. Natural color rendition
12
Q

What are 2 disadvantages to Ring Flashes?

A
  1. Produces images without shadows (which are needed to create a 3D effect)
  2. Images tend to look flat
13
Q

What does the high intensity of light from a twin flash system result in?

A

narrowing down the lens opening and therefor increases the depth of field

14
Q

When taking a photograph of bright surfaces, images will tend to be…

A

darker or underexposed image

15
Q

When taking a photograph of dark surfaces, images will tend to be…

A

too light or over exposed image

16
Q

What corrections on the camera settings are needed to compensate for the flash exposure of dark objects?

A
  • Reduce aperture

OR

  • Preset the exposure compensation in the camera to the negative value
17
Q

What corrections on the camera settings are needed to compensate for the flash exposure of bright objects?

A
  • Manually increase aperture
  • Adjust the exposure set up in the camera to a positive value
18
Q

If light comes parallel to the optical axis (ring flash), what will be the effect on illumination?

A

very flat (not recommended for Portrait and Object Photography)

19
Q

What is the advantage of Aperture Priority (A) Mode?

A

Controlling the depth of field by pre setting the aperture

20
Q

What does Manual Mode (M) preset on the camera?

A

Aperture and Exposure time (shutter speed)

21
Q

What view is recommended for orthodontic, periodontal and prosthetic documentaion?

A

Lateral View

22
Q

What are the Standard Views?

A
  • Frontal View (both arches)
  • Lateral View
  • Occlusal Mandibular View
  • Occlusal Maxillary View
23
Q

What is the frontal view of the arch useful for?

A

Prosthetic and Periodontal Purpose

24
Q

What is the lateral view of the front teeth mainly used for?

A

Anterior teeth together to verify the bite for prosthetic and orthodontic purposes

25
Q

When using a mirror to take a lateral view of posterior teeth, the optical access should be?

A

Perpendicular to the mirror image

26
Q
A