Week 3 - Recording Sports Movements

Question 1

Define shutter speed

Answer 1

Time the sensor of a camera is exposed

Question 2

What does a faster shutter speed cause and how do we combat this

Answer 2

A darker image (less light can enter)
Combat by additional lighting

Question 3

What is aperture

Answer 3

The width of exposed lens

Question 4

What does aperture do and what may we need when we have low aperture

Answer 4

Depth of field increases as aperture decreases
Additional light may be needed

Question 5

How do we provide scale information

Answer 5

Have two distinct points, that are already measured
Then measure how many pixels that distance is (usually x pixels = 1m)
Calculate any distance by counting pixels and dividing by value for 1m

Question 6

How can we reduce parallax error

Answer 6

Placing camera perpendicular to plane of movement

Question 7

What are three ways perspective error can be created

Answer 7

The two points are moved either forwards backwards or on different planes to where they were initially measured