Camera quiz Flashcards
SLR
Single lens reflex
Single lens reflex
Light enters through the lens and is reflected by the mirror up to viewing screen. The travels to a 5 sided pentaprism that turns the inverted image the right way.
DSLR
Digital single lens reflex
Digital single lens reflex
All features of the SLR are integrated and automated into the DSLR
Numbers on Lens
Focal length in mm
Focal length
zoom length
what are the different mode dials?
AV, TV, M, P, A
AV
Aperture priority
TV
Shutter priority
M
Manual
P
Program
A
automatic
what are the two types of lenses?
fixed and zoom
Fixed lens
Only one focal length
Zoom lens
Allows continuous shift of focal length
What is focal length?
Front oof lens that you move. Distance between lens and field plane.
Longer lens
longer focal, narrow angle view, zoomed
shorter lens
shorter focal, wide angle view
what happens when you change focal length?
changes how much of the scene you can see
Long lens or zoomed is also know as?
Telephoto
aperture
size of the lens opening, a hole.
what are the two main uses of aperture?
adjust exposure (darken and brighten), and controls depth of field
what number of f stop does a large aperture have?
smaller f stop
what kind of photo does larger aperture produce
shallow depth of field, not everything will be sharp
what kind of photo does smaller aperture produce
larger depth of field, everything will be sharper
what number of f stop does a small aperture have?
large f stop
depth of field
area from near to far in a scene that is accepably sharp in a photograph
what 3 facts effect depth of field
aperture, focal distance, and shooting distance
minimal depth of field
small amount of image in focus
how does a larger opening effect lighting
more light
how does a smaller opening effect lighting
less light
shutter speed
controls the amount of light that reaches the sensor by the length of time the shutter remains open.
fast shutter
less light, darker
slow shutter
more light, light
shutter speed and aesthetics
capturing and blurring emotion
what does the lens do?
Moves forward and backward to bring objects at different distances to focus
Viewfinder
shows picture
sensor
converts light to electrons signals
ISO speed
describes a sensors sensitivity to light, higher the number the less light is needed for correct exposure
ISO for sunny conditions
50-800
ISO for indoor conditions
800+
What is resolution also know as
Image quality
What does a lower resolution allow you to do
Store more images on memory card but with loss of quality
Raw format photos
highest resolution, keeps the quality the highest
Higher numbers in ISO speed
lets you shoot in lower light but produces images with more noise
White balance aka
color temperature
white balance
dominate light source of what you are photographing
how to correctly expose a photo
must set shutter speed and aperture according to ISO sensitivity and how dark/ light the subject is
Exposer: shutter speed
determines the length of time that light strikes sensor
Exposure: aperture size
determines how bright the light that passes is that passes through lens
How can you see you image in SLR
directly through the lens
Rangefinder cameras
have viewfinder
parallax error
viewfinder and lens don’t see exactly the same thing
Twin lens reflex camera (TLR)
Two lens, one for viewing and other for exposing film
Mirrorless cameras
have small monitor that displays what the lens is seeing aka live view
resolution
maximum number of pixels a camera sensor can capture
sensor size
The larger and less crowded the light sensing elements are in the sensor the higher quality of the image
How to focus camera
by turning ring on the lens or auto focus
what does shutter speed affect
light and motion
Automatic exposure (A)
camera built in meter measures brightness of the scene and sets shutter speed or aperture
Program fully automatic exposure (P)
camera sets both shutter speed and aperture
Shutter Priority (TV)
You set shutter speed and camera auto sets aperture
Aperture priority (AV)
You set aperture and camera auto sets shutter speed
Manual (M)
You set both shutter speed and aperture
slow shutter speed
objects blurred
fast shutter speed
objects sharp
panning camera
shows blur in background but not on moving subject
what does aperture effect?
light and depth of field
bigger the aperture hole
the smaller the f-stop numbers
what does aperture do to depth of field
as aperture gets smaller, depth of field increases, more of the scene from near to far appears sharper
more depth of field (Ape)
small aperture
Less depth of field (Ape)
large aperture
lens speed
maximum aperture, widest aperture to which lens diaphragm can be opened. A lens that is faster opens to a wider aperture and admits more light
single/ fixed focal length AKA
prime lens
what focal length is most like human Vision
normal focal length
long focal length, what is shown
less of scene, and what is shown is magnified
shorter lens (DOF)
more DOF
longer lens (DOF)
little DOF
3 factors that effect DOF
aperture size, focal length, and lens to subject distance