Operation Manual

IMAGE CORRECTION – HISTOGRAM
36
1. Click on , then click on the tone
in the control or prescan image
that should be scanned as the
brightest neutral white in your
image.
• The pointer will change to .
• The RGB brightness values of the selected tone will
be changed to 255.
2. Click on , then click on the tone
in the control or prescan image
that should be scanned as the
darkest neutral black in your
image.
• The pointer will change to .
• The RGB brightness values of the selected tone will
be changed to 0.
Setting the White, Black, and Gray Points
Properly setting an image’s white and black points will usually correct the colour cast and
midtone distribution. Properly setting the gray point will correct the colour balance.
• Changes are automatically applied to the preview image.
3. Click on , then click on the tone in the
control or prescan image that should be
scanned as a neutral tone.
• The pointer will change to .
• The colour balance of the image is shifted to make the selected tone
neutral.
• The selected tone’s brightness value does not change.
Setting the gray point
is not necessary for
most images.