Changing image modes
The Mode submenu lets you change the mode of selected paint
objects.
You might want to change modes so you can use certain features, or
to reduce memory requirements. For example, you might want to
convert an Indexed image to RGB Color mode to apply image filters.
You might want to convert an RGB Color image to Grayscale mode
to save memory when a document is printed without color.
To change image modes: Select one or more paint objects. Or,
with a paint object in edit mode, choose the mode you want in the
Image > Mode submenu.
Some modes are available only if the objects current mode is com-
patible. For example, Black & White mode and Duotone mode are
available only when Grayscale paint objects are selected.
If the mode you choose does not support an images full color range,
a message asks you to confirm the change. Click OK to proceed.
If you choose Duotone mode or Indexed mode, you can select
options in a dialog box and then click OK to complete the conver-
sion. See Duotone image mode on page 31.629 and Indexed
image mode on page 31.623.
Black & White image mode
Black & White image mode is used for scanned line art and black-
and-white (bitmap) images, which contain only black and white
pixels. Black & White mode images require the least amount of
memory and disk space.
To convert to Black & White mode
Grayscale mode images and Multichannel mode images are the only
images you can convert to Black & White mode. If an image is not
Grayscale, convert it to Grayscale mode first if you want to convert it
to Black & White mode.
1
Select the paint objects to convert and choose Image > Mode >
Black & White. The Select Halftone Method dialog box lets you
choose a conversion option.
2
Select Pattern Dither, Diffusion Dither, or Threshold, and then
click OK.
Tip
Many images from the
Web are indexed. These
images must be converted
to RGB before you can
start editing them.