Digital Cameras

Question 1

What does a camera work similarly to?

Answer 1

A scanner

Question 2

What does a digital camera do when it captures an image?

Answer 2

It breaks up what it sees through its lens into a grid of pixels

Question 3

How does a digital camera work (step by step)?

Answer 3

• The shutter opens to let light onto a CCD sensor at the back of the lens
• The intensity or colour of light is measured by millions of tiny sensors arranged in a grid on the CCD sensor
• This information is now stored as an image in the camera’s memory