Graphics Programs Reference
In-Depth Information
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Recovering highlight
details: The Whites slid-
er is used for correcting
clipped highlights. With
the clipping warning ac-
tivated it is easy to see
problem highlights (1).
When moving the slider
to the left, ACR will at-
tempt to reconstruct
clipped details from the
information stored in the
non-clipped channels (2).
Shadows
Shadows replaces the Fill Light slider of previous versions and is used to lighten the darker
tones in a picture without affecting the middle to highlight values. It works at the opposite
end of the spectrum to Highlights slider as the changes it makes are concentrated on the
darkest 25% of tones in the image. Use this control to brighten backlit subjects or boost
shadow details. The beauty of this control is that the changes it makes do not generally
impact on mid to highlight values.
–
Whites
The Whites slider sets the brightest part of the photo. This is generally called the white
point. When adjusting the white point in your images you need to be aware of clipping.
Clipped areas are completely black or white and contain no detail. As you want to main-
tain as much detail in the shadows and highlights as possible, your aim should always be
to spread the picture tones but not to clip delicate highlight or shadow areas so if you start
to see clipping occurring reduce the degree of the change you are applying. Movements left
darken whites and movements to the right brighten the same pixels.
Blacks
Moving the Blacks slider adjusts the position of the black point within the image. Just as
with the Whites control, you should only make shadows adjustments when the clipping
warning is active. This will ensure that you don't unintentionally convert shadow detail to
black pixels. Remember movements of the slider to the right decrease shadow clipping. Mov-
ing it to the left increases or produces clipping.
Clarity
Located along with Vibrance and Saturation controls at the bottom of the Basic panel, this
new slider produces localized contrast changes to otherwise flat images.
Rather than adding contrast to the whole image by stretching the tones between black and
white points, Clarity works on changing contrast on the detail in your photos. There are
many sophisticated, multi-step, sharpening techniques that produce similar effects but
 
 
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