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1-34.
Which of the following focal-length
lenses used at the same lens-to-
film distance will produce the
largest image of the subject?
1.
135mm
2.
80mm
3.
50mm
4.
25mm
1-35.
The angle of field for a normal
lens is within a range of how
many degrees?
1.
25° to 35°
2.
45° to 55°
3.
75° to 85°
4.
95° to 105°
1-36.
What type of lens has an angle
of view greater than 55 degrees?
1.
Telephoto
2.
Mirror
3.
Wide angle
4.
Long-focal length
1-37.
What is the final result when an
image is recorded with a lens that
has a large diaphragm opening?
1.
Moving objects appear sharp
2.
All objects within the scene
appear sharp
3.
Angle of view is increased
4.
Only the object the lens is
focused on appears sharp
1-38.
Photographic perspective depends
on the focal length of the lens.
1.
True
2.
False
1-39.
The lens you are using is focused
on infinity and set at f/8.
The
size of the aperture is 1/2 inch.
What is the focal length, in
inches?
1. 1
1.
Refraction index
2. 2
2.
Closed-down aperture
3. 8
3.
Lens speed
4. 4
4.
Optimum aperture
Learning Objective:
Recognize
the function and the effects of
the aperture of a lens.
1-40.
The lens you are using is set
at f/16 and is focused less than
infinity.
What is the relative
aperture of the lens?
1.
f/8
2.
f/11
3.
f/16
4.
f/22
1-41.
What is the relative aperture of
a 6-inch lens with an effective
aperture of 1.5 inches?
1.
f/4
2.
f/5.6
3.
f/8
4.
f/11
1-42.
Three lenses of different focal
lengths are used at the same f/stop
to photograph the same subject.
What lens, if any, produces the
brightest image on the film plane?
1.
200mm
2.
50mm
3.
28mm
4.
None
1-43.
Which of the following terms
describes the device within a lens
that controls the amount of light
passed by the lens to the film
plane?
1.
Concentricizer
2.
Diaphragm
3.
Adjuster
4.
Obstructor
1-44.
What term is used to describe
the largest aperture of a lens?
4

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