1-23.
What color of light is scattered
the most by the atmosphere?
1.
Red
2.
Green
3.
Yellow
4.
Blue
1-24.
What is the approximate color
temperature of overhead sunlight
on a clear day?
1.
2000 K
2.
3200 K
3.
5400 K
4.
60000 K
1-25.
You have exposed daylight balanced
color slide film under fluorescent
light without a filter. What color
cast do the finished slides have?
1.
Blue
2.
Green
3.
Yellow
4.
Red
1-26.
What is the main purpose of a lamp
reflector?
1. To increase the amount of
light emitted by a lamp
2.
To diffuse light
3.
To polarize light
4.
To redirect light
1-27.
Most electronic-flash units are
designed to be most efficient when
they are at what distance from the
subject?
1.
3 to 10 feet
2.
6 to 12 feet
3.
10 to 18 feet
4.
12 to 36 feet
Learning Objective:
Identify
basic characteristics of photo-
graphic lenses.
1-28.
The inherent errors of a lens
are known by what term?
1.
Faults
2.
Defects
3. Aberrations
4.
Parallax
1-29.
The inability of a lens to focus
sharply both horizontal and
vertical lines on the same plane
is what lens aberration?
1. Astigmatism
2.
Coma
3.
Spherical
4.
Chromatic
1-30.
The distance from the optical
center of the lens to the film
plane is 150mm.
The image on the
film is in sharp focus. The lens
is focused on an object at infinity
or 640 feet away.
What is the
focal length of this lens?
1.
50mm
2.
85mm
3.
135mn
4.
150mm
1-31.
The focal length can be changed
in what type of lens?
1.
Mirror
2.
Zoom
3.
Macro
4. Anamorphic
1-32.
What factor determines the normal
focal-length lens for a camera?
1.
Film size
2. Shutter type
3. Camera size
4.
Lens-to-film distance
1-33.
Providing the camera-to-subject
distance remains unchanged, which
of the following focal-length
lenses provides the greatest
subject area?
1.
200mm
2.
100mm
3.
50mm
4.
25mm
3
