Instruction manual

IMAGE CORRECTION
32
This scanner gives you three options for correcting the brightness, contrast, and colour
balance of the final scan
The Histogram dialog box gives a graphical representation of
the 256 brightness levels for the red, green, and blue colour
channels.
Using sliders, the input and output levels can be adjusted to
make changes in the brightness, overall contrast, gamma
(midtone contrast), and the colour of the image.
A control and preview image appear in the Histogram dialog
box for comparison.
Histogram
This is the easiest way to make image corrections and is
recommended for beginners. Simply choose the image that
looks best from a visual display of contrast and brightness
differences. Click on slider bars to correct the colour
A control (uncorrected) and preview (corrected) image appear
in the Variations dialog box for comparison.
Variations
The Tone Curves dialog box displays correction curves for the
red, green, and blue colour channels. Change the brightness,
contrast, gamma and colour of the output image by changing
the shape of the correction curves.
A control and preview image appear in the Tone Curves dialog
box for comparison.
Tone Curves
The Reset All button in the Prescan window cancels all
corrections applied in the Variations, Histogram, and Tone
Curves dialog boxes.
Colour, brightness, and contrast settings are returned to their
prescan values.
Reset All – Prescan Window