3.4

Chapter 16 Making Image Adjustments 355
6 Drag the Black Point and White Point sliders to where they touch the outside of the histogram
graph, constraining the image to its new black and white points.
Drag the Black Point and
White Point sliders to where
they touch the outside of
the histogram graph.
7 Set a point along the curve by doing one of the following:
•
Click a place on the curve where you want to add a point.
Click the Add Point
button to use the
eyedropper tool to
sample a portion of
the photo and add a
point to the tonal curve.
Click the tonal curve
to add a new point, and
drag the new point to
set the tonal value.
•
Click the Add Point button and use the eyedropper tool to sample a portion of the image.
Note: You can change the Loupe’s color value sample size by choosing an option from the
Adjustment Action pop-up menu. For more information, see Using the Color Meter and
Displaying Camera Information on page 286.
Aperture places a point on the curve in the exact tonal range of the sampled area of
the image.