Basic Knowledge

Question 1

Focal length is the distance from

Answer 1

the center of the lens to the image sensor

Question 2

Another term for image sensor is

Answer 2

focal plane

Question 3

The distance from the center of the lens to the image sensor is called

Answer 3

the focal length

Question 4

Focal length is important because it determines the range of a scene you can capture (angle of view)

Answer 4

the range of a scene that you can capture. (the angle of view)

Question 5

The range of a scene (the angle of view) that you can capture is the

Answer 5

focal length

Question 6

the shorter the focal length is, the wider range you can capture, while the longer the focal length is, the larger distant objects appear.

Answer 6

the wider the range. Distant objects are smaller

Question 7

What is the range if the focal length is longer

Answer 7

the larger distant objects appear (narrower view)

Question 8

Generally, lenses with a focal length of around 35 mm are called

Answer 8

“normal lenses”

Question 9

“Normal lenses” have an angle of view close to

Answer 9

the human visual field. Around 35 mm

Question 10

Lenses with a focal length shorter than 35 mm are called

Answer 10

wide angle lenses

Question 11

Lenses with a focal length longer than 35 mm are called

Answer 11

telephoto lenses

Question 12

Aperture is also called the

Answer 12

f-number

Question 13

The field of focus is determined by

Answer 13

the Aperture or f-number

Question 14

The greater area of defocus the [smaller or larger] the f-number

Answer 14

smaller f-fumber (aperture)

Question 15

Defocus is

Answer 15

amount of area not focused on, therefore not sharp and crisp