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1-53.
What distance is required between
the lens and the focal plane so
the image formed by a 2-inch focal-
length lens is the same size as the
subject?
1.
1 inch
2.
2 inches
3.
1.4 inches
4.
4 inches
1-54.
The distance the focal plane can be
moved forward or backward from the
plane of sharp focus and still
record an acceptably sharp image is
known by what term?
1.
Depth of field
2.
Circle of confusion
3.
Depth of focus
4.
Hyperfocal distance
1-55.
What term describes the distance
from the lens beyond which all
objects are rendered in acceptably
sharp focus when the lens is set at
infinity?
1.
Hyperfocal distance
2.
Depth of field
3.
Depth of focus
4.
Near distance
1-56.
What is the hyperfocal distance of
a 6-inch lens set at f/11 when the
permissible circle of confusion is
0.006 inches?
1.
2.38 feet
2.
36.72 feet
3.
545.45 feet
4.
3361.11 feet
1-57.
Your lens is set at f/11, the
hyperfocal distance is 71 feet,
and your subject is 112 feet from
the camera.
You should focus at
what distance for maximum depth
of field?
1-58.
Of the following lenses, which one
provides the greatest depth of
field when set at f/5.6 and focused
on an object 6 feet from the lens?
1.
35mm
2.
50mm
3.
80mm
4.
135mm
1-59.
Which of the following factors
affects depth of field?
1.
Lens focal length
2.
Lens f/stop
3.
Camera-to-subject distance
4.
All of the above
1-60.
You are using a lens focused
on the hyperfocal distance which
is 50 feet.
What is the approx-
imate depth-of-field range?
1.
25 feet to 75 feet only
2.
25 feet to infinity
3.
50 feet to infinity only
4.
75 feet to infinity only
1-61.
What is the depth of field of a
50mm lens set at f/8 with a
permissible circle of confusion of
0.002 inches when it is focused on
an object 20 feet from the lens?
1.
10.0 feet to 20.0 feet
2.
15.7 feet to 23.4 feet
3.
18.6 feet to 21.7 feet only
4.
20.0 feet to 23.8 feet only
Learning Objective:
Determine
the relationship between the
subject/image size.
1-62.
A document is 1-inch square. You
must photograph it to produce a
4-inch-square image on the film.
Using a 6-inch lens, what image
focal distance is required?
1.
35.5 feet
2.
56.0 feet
3.
71.0 feet
4.
112.0 feet
1.
10 inches
2.
12 inches
3.
24 inches
4.
30 inches
6

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