User Manual

Image Adjustments and Effects 49
• Lens Filter adjusts the color balance for warming or cooling down
your photos. It digitally mimics the placement of a filter on the front
of your camera lens.
• Threshold creates a monochromatic (black and white) rendering. You
can set the threshold, i.e. the lightness or gray value above which
colors are inverted.
• Equalize evenly distributes the lightness levels between existing
bottom (darkest) and top (lightest) values.
• Negative Image inverts the colors, giving the effect of a photographic
negative.
• Black and White Film is used for grayscale conversion with
controllable source channel input.
• Posterize produces a special effect by reducing the image to a limited
number of colors.
Instead of the manual tonal adjustments above, the PhotoPlus Image menu
affords a number of functions you can apply to correct shadow/highlight values
in an image automatically. Adjust>AutoLevels or Adjust>AutoContrast may
do the job in one go; if not, you can use Adjust>Levels... or
Adjust>Shadow/Highlight/Midtone....
Use the Histogram tab to display statistics and image color values,
helping you to evaluate the kinds of image adjustments that may be
needed.