Aperture

Aperture

Lecture notes on aperture

Academic year: 2022/2023

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Aperture - The aperture controls the amount of light that enters the camera. It is the largest factor that contributes to depth of field (how much in front of and behind the subject is sharp / in focus), and works together with the shutter speed in order to produce the exposure. - Bigger, wider openings = more light / more exposure / smaller numbers - Larger openings = less light / less exposure / larger numbers Depth of Field - The depth of field is the zone of sharpness - Wider aperture produces a more shallow depth of field ; close up detail appears where the camera focused but all around it is dark - Smaller aperture = a deeper depth of field - Aperture and Depth of Field tell the viewer what the photo intends to focus on - Higher F/stop = deeper depth - Distance from the subject can also affect depth of field ; when further away, the depth of field appears to be greater although it is actually the same aperture - whereas when really close to the subject, the depth will appear to

be less although it is actually the same.

The three factors that go into determining depth of field are F/stop (aperture size), distance from the subject, and lens focal length (wide angle lens gives the most depth of field / normal lens doesn't affect depth of field, and a long lens gives the least depth of field. * The shutter speed + the aperture = exposure * Shutter Speed
Shutter speed exposes the film or sensor by time ; shutter speed = time
Faster (smaller number) shutter speed = better motion capture
Controls the amount of time that light is exposed to the aperture
Affects the motion that is captured ; shutter speed controls the motion by time.
Slower shutter speed does not capture motion as well as faster speeds (smaller numbers of seconds.
Even a heartbeat can move camera / blur the photo
1/30 is the fastest speed at which one can hand hold a camera without their heartbeat likely making the camera move.
Using a slower shutter speed than the millimeter size of the
The “b” in a camera’s shutter speed choices is short for bulb. In bulb, the shutter stays open for as long as the shutter release is held down. Bulb could be used to capture slow fireworks or low light events that become fully exposed.
The higher the ISO number, the faster and more sensitive to light

Aperture

- The aperture controls the amount of light that enters the camera. It is the largest

factor that contributes to depth of field (how much in front of and behind the subject is

sharp / in focus), and works together with the shutter speed in order to produce the

exposure.

- Bigger, wider openings = more light / more exposure / smaller numbers

- Larger openings = less light / less exposure / larger numbers

Depth of Field

- The depth of field is the zone of sharpness

-Wider aperture produces a more shallow

depth of field ; close up detail appears where

the camera focused but all around it is dark

-Smaller aperture = a deeper depth of field

- Aperture and Depth of Field tell the viewer

what the photo intends to focus on

- Higher F/stop = deeper depth

- Distance from the subject can

also affect depth of field ; when

further away, the depth of field

appears to be greater although it

is actually the same aperture -

whereas when really close to the

subject, the depth will appear to

Intro to Photo : Digital (ART376)

Millersville University of Pennsylvania

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Aperture

Course: Intro to Photo : Digital (ART376)

University: Millersville University of Pennsylvania

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