Lenses, Focal Length and F-top Quiz

Read cybercollegemodules 10, 11, and 12 at the links below. After reading the modules, answer the following questions on own paper.

  1. In the famous film,The Graduate,the director wanted the audience to feel what the main character was feeling--that as he was running toward the camera and church that he was hardly moving. Which of the following lenses would be best to convey that feeling?

A.5mm

B.10mm

C.50mm

D.100mm

E.500mm

  1. The range of distance in sharp focus along the path of the lens is
  1. Angle of view
  2. Focal length
  3. Depth of field
  1. At normal distances depth of field

A.extends primarily in front of the object focused on

B.extends equally in front of and behind the object focused on

C.depends on the speed of the lens

D.extends about one-third of the way in front of and two-thirds of the way behind the object focused on

E.depth of field does not apply in normal subject-to-camera distances

  1. Which lens focal length would give you the widest angle of view?

A.2000 mm

B.250 mm

C.50 mm

D.5 mm

  1. If a lens has a minimum focal length of 10mm and a 12:1 zoom ratio, the maximum focal length of this zoom lens would be

A.100 mm

B.210 mm

C.120 mm

D.2100 mm

E.1200 mm

  1. If you cannot use a tripod with a camcorder and must hand-hold the unit, it would be best to stick with which zoom setting?

A.zoomed all the way in (maximum focal length)

B.set at the mid-point in the zoom range

C.set at the widest angle (minimum focal length)

  1. A lens extender

A.reduces the focal length of a lens

B.speeds up the lens

C.increases the focal length of the lens

D.gives you a wider angle of view

E.none of the above is true

  1. Which of the following focal lengths would appear to do the most to compress or reduce the apparent distances between objects along the path of the lens

A.5 mm

B.10 mm

C.50 mm

D.100 mm

E.120 mm

  1. Which of the following f-stop settings would transmit the most amount of light to the camera's target?

A.f/11

B.f/1.4

C.f/2.0

D.f/22

E.f/32

  1. By intentionally using a limited depth of field to force views to look at a particular area of a static scene you are using the technique of
    A. follow focus

B. selective focus

C. rack focus

D. intermediate focus

E. incongruent focus

  1. Which f-stop would appear to offer the least depth of field?

A.f/11

B.f/2.8

C.f/5.6

D.f/22

E.f/1.4

  1. The angle of view of a zoom lens

A.Varies with the speed of the lens

B.Varies with the effective focal length

C.Varies with the f-stop used

D.Never varies

E.None of the above is true.

  1. A wide-angle lens

A.has a longer focal length than a telephoto lens

B.has a narrow angle of view

C.compresses distance and speed

D.all of the above are true.

E.none of the above are true.

  1. Auto-focus lenses generally have the problem of

A.requiring the area you want to focus on to be in the center of the frame

B.reliably focusing on solid areas without detail

C.trying to accurately focus through glass

D.being fooled by reflections

E.All of the above are correct.

F.None of the answers is correct.

  1. With human subjects the best (and easiest) place to focus a lens is

A.on the reflection in the subject's eyes

B.on the tip of the nose

C.slightly in front of the subject

D.slightly behind the subject

  1. Themacrolens setting is used for

A.wide-angle shot

B.extreme close-ups

C.super telephoto shots

D.n telescopes

  1. Primelenses

A.are lenses of a fixed focal length

B.are used by non-professionals

C.are only used on still cameras and amateur equipment

D.are preferred by some video and film professionals

E.two of the above are correct

F.None of the above are correct

  1. Thef-stopdesignation, especially among professionals, is being replaced by
  1. non-adjustable f-stops
  2. T-stops
  3. servo zooms
  4. shutter speeds
  5. None of the answers is correct.

Lenses, Focal Length and F-top Quiz Answer Sheet

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