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Figure  2-2.Step  tablets
Analyzing Characteristic Curves

Photography (Advanced) - Advanced manual for photography and other graphic techniques
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PLOTTING  CHARACTERISTIC  CURVES Once the graph is labeled, use a densitometer and read the densities of the sensitometric strip and plot them on the graph to form a curve. Assume that the sensitometric strip has the following density readings: To plot these densities on the graph, find the density value reading of step 1 and place a dot at that point. Do the same with steps 2 through 21, as shown in figure 24. After plotting all the readings, connect the plotted points with a french curve and straightedge (fig. 2-5). You do not necessarily want to connect each  plotted  point.  The  resulting  curve  should  be  a smooth, flowing line with no angles apparent. Remember  to  label  every  graph  with  all  the pertinent information, because information that is not recorded on the graph may be lost or forgotten. This 2-8







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