Cinematography lecture one review for quiz one 295

What are the two types of lenses

Prime, Zoom

What is a prime lens

A lens with a set focal length

What is a zoom lens

A lens with a variable focal length

What is focal length?

Focal length is how much of the world we see in the image

Do wide lenses have a smaller or greater field of view?

Greater

Do long (Telephoto) lenses have a smaller or greater field of view

Smaller

What focal length's would be a telephoto lens, on a standard sensor?

80mm or less

Wide lenses are also known as

Short lenses

Telephoto lenses are also known as

Long lenses

What focal length would be a wide lens, on a standard sensor?

35mm or less

What focal length, on a standard sensor, matches human vision?

50mm

Zoom lenses allow us to?

Change the focal length internally

What do wide lenses show?

More background, distort foreground images

What do Telephoto lenses show?

Less background, compress space

Lenses were designed after?

The human eye

As the Iris, (or aperture) opens up, what happens?

More light is let in

As the Iris, (or aperture) closes, what happens?

Less light is let in

The size of the aperture is called what?

F stop

F stops means

Focal length/Size of opening (Dived by)

The smaller the fStop number...?

The more light is let in

Each number of fStop changes by...?

Double's or half

The two numbers we must remember to determine any fstop are

2,2.8

As the aperture opens, two things happen

Exposure is increased, depth of field is reduced

greater depth of field means

more of the image is in focus

less, or shallow depth of field, means

less of the image is in focus

What is the viewer of any image drawn to?

the point of greatest tonal contrast

In our class, the fStop we must always start at is

2

Definition of depth of field is

The distance between nearest and furthest objects in an image that are in focus

Shutter speed is

the amount of time that the shutter is open to let light hit the sensor

Shutter speed controls

how much light and motion are captured in an image

The shutter effects?

The amount of motion blur

The duration of shutter is described in

degrees

normal shutter speed slows film to be exposed

half the time

normal shutter speed is_____ because_____

1/48, because there are 24 frames per second

The shorter amount of time the shutter is exposed, or as we close down the shutter

the less motion blur there will be

What is the difference between ISO and ASA

They are the same

Artistic side effect of ISO?

Noise

The greater the ISO

The greater the noise

Our Camera's native ISO:

800

Exposure triangle consists of?

Aperture, Shutter Speed, ISO

To darken without adjusting the settings what can be used

ND filter

The Exposure triangle should not be used to make something brighter or darker, it should be used instead for

Artistic side effect

Tools to check exposure include:

1. Wave form, 2. Histogram, 3. False Color, 4. Zebra

Orange light temperature

3200 k

Blue light temperature

5600 k