Recording Sports Movement Flashcards
1
Q
Basic recording
A
- hole that light passes through, lense, chip sensitive to light
Bayer filter - records colour
CCD (charge coupled device)
Pixels
- across chip, light sensitive photos sites
- when light hits site, small electric change
How much charge = how much light
2
Q
Explain shutter speed
A
- cameras operate at 50hz
- shutter speed = time sensor is exposed, not frames per second
- bright but blurry =long
- dark but clear = short
3
Q
What is aperture
A
The size of the hole that lets light in = f stop
Depth of field increases as aperture reduces
4
Q
What is f stop
A
The ratio of focal length to aperture diameter
Bigger holes have smaller f stops
