Unit 3- Shutter & aperture, ISO & WB

Question 1

why does the shutter open during an exposure

Answer 1

the shutter opens during an exposure so light can expose the image sensor

Question 2

what is the effect of a slower shutter speed

Answer 2

image gets lighter

Question 3

what is the effect of a faster shutter speed

Answer 3

lets less light strike the image sensor so the image is darker

Question 4

explain the effect of a longer shutter length on motion

Answer 4

the more a moving subject will be blurred, also you are more likely to cause blur by moving the camera slightly.

Question 5

explain the effect of a short shutter length on motion

Answer 5

fast shutter speed opens and closes quickly so a moving subject doesn’t move very far during the exposure

Question 6

how would you change your shutter speed to capture, or freeze, action.

Answer 6

the faster the subject is moving the faster the shutter speed must be.

Question 7

the higher the F-stop # the (more/less) blurred moving action is

Answer 7

less

Question 8

the lower the F-stop # the (more/less) blurred it is

Answer 8

more

Question 9

what are stops

Answer 9

shutter speed settings

Question 10

what are the three types of shutters

Answer 10

• electronic
• leaf
• focal plane

Question 11

movement can be effectively conveyed in a photograph which can reveal…….

Answer 11

drama and grace that are missed with the naked eye.

Question 12

in addition to the exact shutter speed, what two other factors influence a sharp and frozen subject

Answer 12

its size and distance

Question 13

what is the backdoor method to attaining fastest shutter speed

Answer 13

• use aperture priority mode
• select widest available aperture
• if the speed still doesn’t seem fast enough, increase the ISO setting.

Question 14

panning is easiest with what kind of lens

Answer 14

standard or short telephoto lens

Question 15

how do you freeze your subject against a blurred background

Answer 15

-follow your subject with the camera

Question 16

how do you blur your subject

Answer 16

-hold the camera steady and snap a picture as the subject passes by.

Question 17

how do you create an impressionistic look

Answer 17

-pan the camera at a faster or slower shutter speed the the moving subject

Question 18

what does ISO sensitivity do

Answer 18

governs the sensors response to greater or lesser amounts of light.

Question 19

at higher ISO settings, (more/less) light is needed to capture an acceptable image

Answer 19

less

Question 20

when are lower ISO settings useful

Answer 20

• in bright conditions

- when you want to use wide apertures/slow shutter speeds

Question 21

what does auto ISO do

Answer 21

sets ISO automatically by default

Question 22

what modes terminate auto ISO

Answer 22

P, S, A or M modes

Question 23

do natural and artificial light sources have the same colour

Answer 23

no, they can vary in colour

Question 24

what is DOF

Answer 24

is the zone -extending both before and behind the point o f focus-in which objects appear to be sharp

Question 25

list the three main factors that affect DOF

Answer 25

- the focal length of lens - aperture - the distance to the subject

Question 26

whats the simple rule of DOF

Answer 26

small aperture=big DOF | big aperture=small DOF

Question 27

what is apparent sharpness

Answer 27

refers to the objects appearing to be sharp, how sharp the image appears

Question 28

what is hyperfocal distance

Answer 28

the closest distance at which a lens can be focused while keeping objects sharp

Question 29

what is the "one third" focus rule

Answer 29

is to focus one third of the way into the photo

Question 30

a higher ISO reacts (quickly/slowly) to light

Answer 30

quickly

Question 31

a lower ISO is (quicker/slower) to react to light

Answer 31

slower

Question 32

what kind of tones does incandescent and incandescent white have and how does the camera compensate these tones

Answer 32

has yellow, camera adds blue

Question 33

what kind of tones does fluorescent have and how does the camera compensate these tones

Answer 33

has green, camera adds red

Question 34

what kind of tones does direct sunlight have and how does the camera compensate these tones

Answer 34

has blue, camera adds warm yellow

Question 35

what kind of tones does flash-white have and how does the camera compensate these tones

Answer 35

has blue, camera adds warm yellow

Question 36

what kind of tones does cloudy-white have and how does the camera compensate these tones

Answer 36

has a little more blue, camera adds warm yellow

Question 37

what kind of tones does shade-white have and how does the camera compensate these tones

Answer 37

bluer than cloudy, camera will add more warm yellow