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ASSIGNMENT 2
Textbook Assignment:
"Photographic Quality Assurance."
Pages 2-5 through 2-29.
Learning Objective:
Identify
the principles of sensitometry.
2-1.
For which, if any, of the following
reasons are sensitometers used to
expose light-sensitive materials in
a QA program?
1.
They are easier to operate in
complete darkness than a 35mm
camera
2.
They provide a known quantity
and quality of light
3.
They provide exact density
readings
4.
None of the above
2-2.
In studying the characteristics of
a light-sensitive material, you
should use what instrument to make
a series of graded exposures on the
material being tested?
1.
Densitometer
2.
Sensitometer
3.
Exposure meter
4.
Wedge spectrograph
2-3.
To determine the response
characteristics of an emulsion
under conditions that simulate
actual photography, the light
source of your sensitometer must
meet which of the following
conditions?
1.
The color temperature of the
light must be equivalent to
that of the light used in
practical photography
2.
The time of exposure must
be accurately controlled
3.
The intensity of light must
be known
4.
All of the above
2-4.
What is the approximate color
temperature of an incandescent
light source in a sensitometer?
1.
2400 K
2.
3200 K
3.
5400 K
4.
7000 K
2-5.
2-6.
2-7.
2-8.
2-9.
What is the approximate color
temperature of sunlight?
1.
2400 K
2.
3200 K
3.
5400 K
4.
7000 K
What is the purpose of the step
tablet in a sensitometer?
1.
It is used to produce a
logarithmically graded series
of exposures
2.
It allows you to stack strips
of film without damaging them
3.
It controls the amount of
voltage supplied to the light
source
4.
It lists the procedural steps
for producing a sensitometric
strip
What is the density difference
between each step on an 11-step
step tablet?
1.
1.00
2.
0.11
3.
0.15
4.
0.30
On a 21-step step tablet, there
is a difference of what number
of f/stops between each step?
1. 1
2. 2
3.
l/2
4.
l/3
You are preparing to process a
control strip through a roller-
transport processor.
You should
feed the control strip into the
processor in what manner?
1.
Low-density end first
2.
High-density end first
3.
It does not matter which
end is fed first
8

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