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Articles and Tutorials
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Revisiting Black-and-White:
Simple yet dramatic
black-and-white conversions with iCorrect EditLab Pro
Although known for
its superb color correction capabilities, iCorrect EditLab Pro is also a
very powerful tool for converting RGB color images to black-and-white.
The primary challenge
when doing this conversion is controlling the manner in which different
colors map onto a gray shade. It is not too surprising to realize that
two easily distinguished, differently colored objects, may both be given
the same gray shade after conversion, causing them to appear the same.
In this tip, we will
see how EditLab Pro may be used to address these concerns. As a test
subject, we will use an image of a boy wearing a multi-colored sweater.
If we simply performed a Mode Change in Photoshop, the conversion
produces the result seen in the middle image. You can see that the
blue and the gray parts of the sweater both convert to the same gray
level. Likewise for the yellow and white parts. So the general
appearance of the sweater pattern has suffered by this conversion.
The third image was achieved using iCorrect EditLab Pro.
  
Now let's see how
easy it is to use EditLab Pro to do this conversion. It involves a few
simple steps:
1. After launching
EditLab Pro, use the first three tools to perform a normal color
correction (i.e. neutral balance, black/white point, and overall
brightness, contrast and saturation). Doing this will improve the tone
range of the image prior to black-and-white conversion.
2. Select the fourth
EditLab Pro tool: Hue Selective Edit. EditLab Pro's "SmartColor" feature
will automatically set the six hue handles to useful hues in your image.
Here we can see how these handle positions correspond to the colors
found in our image:

3. Now, for each of
the six hue handles, select the handle (on the inside of the hue ring)
and set its Saturation to -50.

You will see that
this causes all of the color to drain out of your image.
4. Finally, visit
each hue handle and adjust its Brightness to the desired level. You will
see that as you change the Brightness for a particular hue handle, the
gray shade for that color only changes in the image. (Use the Preview
checkbox as needed to view the image in color.)
In our test image, we
will set the sweater's blue color a bit brighter, and its yellow and
green a bit darker, to provide better discrimination among the tones
afterwards.
You can readily see
the improvement over the normal Photoshop mode change:
  

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