Understanding Aperture in Photography

What is aperture?

• The hole in the lens through which light travels into the camera body

• The size of the pupil in the human eye

• The maximum aperture of a lens

• The speed of the lens

All cameras are designed like...

• grapes

• human belly buttons

• human eyes

• oranges

Explain how the cornea and iris are related to camera lenses.

What is the function of the diaphragm in a lens?

• To control the size of the aperture

• To gather light and bend it inward

• To block all light except the light that goes through the aperture

• To determine the depth of field

How is aperture expressed in photography?

• In f-numbers

• In ISO values

• In shutter speeds

• In focal lengths

What does a larger aperture (smaller f-stop) mean?

• More light enters the camera

• Less light enters the camera

• A larger depth of field

• A smaller depth of field

What is the maximum aperture of a lens?

• The smallest f-number the lens can achieve

• The largest f-number the lens can achieve

• The speed of the lens

• The amount of light the lens can pass into the camera

Why are lenses with larger maximum apertures considered fast lenses?

• Because they can pass more light into the camera

• Because they have a smaller depth of field

• Because they have a larger focal length

• Because they have a smaller aperture

What is the impact of aperture on the depth of field?

• A large f-number brings all foreground and background objects into focus

• A small f-number isolates either the foreground or background objects

• A large f-number makes everything blurry

• A small f-number sharpens out-of-focus areas

Why are fast lenses important for night photography?

• Because they can pass more light into the camera

• Because they have a larger depth of field

• Because they have a smaller focal length

• Because they have a smaller aperture