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Learning Objective:
Demonstrate
Learning Objective:
Identify
understanding of gamma and the
factors that affect the contrast
way it is calculated.
of light-sensitive materials.
2-42.
2-43.
2-44.
2-36.
The slope or gradient of the
straight-line portion of a
characteristic curve is determined
by the relationship between a given
log H interval and which of the
following factors?
2-37.
What range of gamma is desirable
1.
Useful exposure scale
2.
Emulsion latitude
3.
Total density range
4.
Corresponding density
difference
for negatives used to record
ground-pictorial subjects?
1.
1.00 to 1.50
2.
1.20 to 2.40
3.
0.65 to 0.90
4.
0.60 to 2.40
2-38.
What gamma provides an equal change
of densities for an equal change
of exposures in the straight-line
section of a characteristic curve?
1.
1.00
2.
2.00
3.
0.30
4.
0.50
2-39.
Which of the following symbols
is used to indicate change or
difference?
1.
Alpha
2.
Beta
3.
Delta
4.
Gamma
2-40.
Determine the gamma of a negative
using the following information.
H
1
- H
2
is equal to 2.00 and D
1
- D
2
is equal to 1.00.
1.
1.00
2.
2.00
3.
3.00
4.
0.50
2-41.
You are determining the gamma of a
characteristic curve.
D is 0.65
and
H is 0.95.
What is the gamma?
1.
1.00
2.
1.46
3.
0.68
4.
0.39
A negative may contain which of
the following types of contrast?
1.
Midtone
2.
Highlight
3.
Shadow
4.
Each of the above
Other than personal preference, you
should use what factor to determine
the contrast-printing filter with
which a black-and-white negative
will print best?
1.
Gamma
2.
Contrast index
3.
Total negative contrast
4.
Emulsion latitude
You have processed several rolls of
the same type of black-and-white
negative film to the same gamma.
After inspecting the negatives, you
determine that all the negatives
were exposed correctly.
Therefore,
you can assume that all of the
negatives can be printed using the
same contrast-printing filter.
1.
True
2.
False
2-45.
Gamma can be considered as the
ratio between what factors?
1.
Scene brightness range and
negative density
2.
Scene contrast and negative
contrast
3.
Scene contrast and negative
density
4.
The shoulder and the toe
of a characteristic curve
2-46.
When film exposures extend into the
toe section of the D-log H curve,
what measurement should you use to
measure the effects of exposure and
development?
1.
Contrast index
2.
Gamma
3. pH
4.
Specific gravity
11

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