Exposure Flashcards

(42 cards)

1
Q

four variables of a good exposure

A

F.L.A.S. (H)
Shutter speed (1/sec)​
Apertures (f/stops)​
Film speed / digital ISO equivalents​
Light (ambient or supplemental lighting)

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2
Q

proper exposure triangle

A

sides of the triangle
-f/stop (aperture)
-film speed (ISO)
-shutter speed
center of triangle
-light (ambient/flash)

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3
Q

Exposure

A

The product of the intensity of _light that reaches the film plane/digital sensor which is controlled by the lens aperture (diaphragm)_and the length of time which is controlled by the shutter speed

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4
Q

types of exposure

A

Properly exposed, underexposed, or overexposed

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5
Q

exposure that halves ligjht

A

-1

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6
Q

exposure that doubles light

A

+1

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7
Q

properly exposed

A

0

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8
Q

single lens reflex

A
  1. First the image viewed by the photographer through the viewfinder and the light striking the sensor both come from a single lens
  2. Second the light coming from the lens is reflected (reflex) by a series of mirrors to the viewfinder
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9
Q

type of camera that is not a SLR

A

point and shoot

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10
Q

identify components of camera

A

1.Lens elements (a series of prisms that allows rays of light to come to a point of convergence)​

2.Mirror down​

3.Shutter’​

4.Sensor​

5.Mirror up​

6.Condenser lens​

7.Pentaprism​

8.Viewfinder

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11
Q

shutter typically can be found in ?

A

camera body

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12
Q

what is shutter speed?

A

amount of time the shutter is allowed to stay open

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13
Q

Shutter speeds may be indicated as whole numbers, but are really fractions. what are the shutter speeds?

A

1
2
4
8
15
30
60
125
250
500
1000
2000

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14
Q

Whole number by itself =
Whole number with “” = ​
1/60 is faster than ?

A

fraction ex: 15, 1/15
whole number ex: “15”, 15​
1/15

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15
Q

what happens if you need longer shutter speeds?

A

B = bulb ​

Shutter remains_open____ until shutter button is _released______​

Remote shutter release cable can be used instead of depressing shutter button

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16
Q

slower shutter speed (open for longer)

A

more light

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17
Q

fast shutter speed (open not as long)

18
Q

faster shutter speed (open shorter)

A

even less light

19
Q

shutter speeds slower than 1/60 require a tripod why?

A

Because a little bit of your natural hand shake is going to cause blur in image

20
Q

what is aperture (f-stops)?

A

The opening in the lens (diaphragm) through which light passes

21
Q

what is the diaphragm

A

set of blades forming a circular opening

22
Q

the size of the aperture is either ? or ?

A

fixed or adjustable

23
Q

lens opening are usually calibrated in ?

A

f/stops (fractions)

24
Q

primary f/stops

A

f1
f1.4
f2
f2.8
f4
f5.6
f8
f11
f16
f22
f32
f45

25
shutter speed going towards 1
slow more light creative blur eliminates
26
shutter speed going towards 2000
fast less light freezes motion
27
apertures going towards 1
open more light less DOF
28
aperture going towards 45
closed less light more DOF
29
ISO going towards 100? towards 800?
-less sensitive -more sensitive
30
f/stop fractions
relates size of aperture opening (DOD) to the focal length of the lens (FLL)
31
The larger the number the smaller the opening
Less light narrow diaphragm
32
The smaller the number the larger the opening
more light large diaphragm
33
4 non-normal scenes
dark-colored scenes light-colored scenes dark and light scenes ​ scenes with a lot of sky
34
what will light meters provide for normal scenes?
Light Meters will provide proper exposures for ‘Normal ‘ Scenes  reflects 18%
35
reflective light meter
built-in near sensor to determine the amount of the light to properly expose the image
36
averaging/center-weighted meters
emphasizes light from the center of view, most of light coming in through lens
37
spot meter
measures light from a small area of the center - specific area to be properly exposed
38
matrix meter
break up light coming in into series of grids
39
reflects 18% of the light that strikes the scene
normal scene
40
18% gray card
standard used to determine the correct amount of light to enter the camera
41
what else reflects about 18%?
grain grass and well-traveled asphalt
42