External devices: Digital Camera

A digital camera detects light using...

• a retina

• a lens

• an iris

• a CCD or CMOS sensor

How does light enter the camera?

• Through the lens

• Through the view finder

Explain how the glass elements in the lens work.

• They draw the picture on the sensor or film in a camera.

• They focus light toward the sensor or film in a camera.

What is the job of the aperture?

• It can open to allow less light to enter.

• It can close to allow more light to enter.

• It can open or close to allow more or less light to enter.

• It moves the lenses inside the camera.

A DSLR is a type of camera.

What does the "D" in "DSLR" stand for?

• The "D" stands for digital because the camera uses film.

• The "D" stands for digital because the camera stores images digitally.

What is the shutter's job?

• It allows the light to come through the lens.

• It allows the light to hit the camera's sensor.

• It reflects the light off the mirror in the camera.

Which part of the camera is responsible for focusing the image?

• The lens

• The sensor

• The viewfinder

• The shutter

What does the CCD/CMOS sensor in a digital camera measure?

• The intensity of light

• The colour of light

• The amplitude of light

How do digital cameras capture colour?

• By passing the incoming light through coloured filters

• By passing the incoming light through lenses

• By having different sensors for each colour

• By using a prism to separate the light into colours

What does the CCD/CMOS sensor in a camera do?

• Convert the incoming light into an electrical signal

• Convert the incoming light into an analogue signal

• Convert the incoming light into different colours