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Use File:Save as A Copy to create a backup copy of the
original.
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How would you describe the dynamic range of this
image, limited or wide?_____________________________________________
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Use the Image:Adjust:Layers menu sequence to open the
Layers dialog box.
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Does the histogram look like the one in the example?________ Cycle
through all four channels. Do all the histograms look similar to one
another?_________
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From the histograms, what can you say about the distribution of
light and dark pixels in the image?
____________________________________________
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Do the histograms reflect your first impression of the
image?______
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Do you need to adjust the black triangle for any of the channels?
____Would you agree that we have plenty of black pixels
already?______________
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On the R channel, we do have a spike of pixels that are white, but
we do not have nearly enough very light pixels as indicated by the
wide gap of few if any pixels before the gray triangle. Move
the white triangle left to the point that you see a sustained level
of pixels, almost to the original location of the gray
triangle. Do the same on the G and B channels and hit OK.
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Does the image now have a greater dynamic range? ___________ Is it
more appealing and easier to read?_____________________
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Open the Image:Size dialog box again and check the size of the
file. Has it changed due to our adjustments? _______________
