Exposure Triangle Flashcards
What is aperture.
Aperture is the small opening in the lens that controls the amount of light that gets into the camera.
How is aperture expressed
In f-stop numbers e.g. F2.8 or f/2.8
What will lower f-stops do
Low aperture let more light into camera and produce a s,all depth of field.
What is meant by a small depth of field.
Closest objects will be in focus and the background will be out of focus.
What do higher f-stops do
High aperture means less light into the camera and produce a large depth of field.
What does large depth of field mean
Sharper background and pretty much everything will be in focus.
What is a key thing to remember about aperture
The larger the aperture the smaller the f-stop number. F/1.4 is a wide lens opening and a small depth of field.
Shutter speed
Represents the time that the shutter stays open when taking a photo.
What is shutter speed measured in
Seconds of fractions of a second. E.g. 1/1000, 1/750 , 1/250 = 250th of a second
1/2000 is what type of shutter speed
Very fast shutter speed
1/30 is what type of shutter speed
slower shutter speed
The slower the shutter speed….What happens to time
The more time the shutter is left open, therefore More light is entering the camera.
Correct exposure
Aperture and shutter speed work together to ensure correct exposure.
The right amount of light has exposed the image sensor.
What type of shutter speed would you have if the aperture was large
1/1000 = quite a fast shutter speed to have correct exposure.
What would’ve happen to shutter speed if aperture was small.
Around 1/60 = slow shutter speed to have correct exposure.
