Photographic Lenses

Question 0

Distance from the lens to the focal plane when the lens is focused to infinity

Answer 0

Focal length

Question 1

Surface in the camera (film or digital sensor) on which the focused lens forms a sharp image

Answer 1

Focal plane

Question 2

Focal length divided by the aperture diameter

Answer 2

F number

Question 3

Range that a lens can project on to focal plane

Answer 3

Angle of coverage

Question 4

A 50 mm lens is called a ? lens. It for,s an image that is similar in size to that seem by the human eye, with the same angle of coverage and no magnification.

Answer 4

Normal

Question 5

Any lens with a fixed focal length

Answer 5

Prime lens

Question 6

Less than 50 mm in focal length is a ? lens.

Answer 6

Wide angle

Question 7

Reduces haze or fogginess by absorbing uv Rays also referred to as “haze” or “skylight” mainly used to protect lens

Answer 7

Ultraviolet filter

Question 8

Filter reduces glare off of reflexive surface by not allowing light to enter the lens at harsh angles, also help skies stay blue in photography

Answer 8

Polarizing filter

Question 9

Lighten their own color and darken their complimentary color

Answer 9

Colored filters

Question 10

Why do color filters work the way they do?

Answer 10

Absorbs its own color and allows the other colors to pass through

Question 11

What colors do the come in?

Answer 11

Red green blue orange

Question 12

Lenses that are threaded to attach to the ca,eras lens, allow you to get physically closer to the subject

Answer 12

Macro or close up filters

Question 13

What kind of sets for close up filters come in

Answer 13

+1 +2 +4

Question 14

What do the numbers +1 and +4 signify?

Answer 14

Higher the number the closer you can get to the subject

Question 15

What is the difficulty in using these filters?

Answer 15

The depth of field is extremely short, focusing can be a challenge