Image Transparency
Create Soft Masks from Photoshop TIFF Alpha Channels
Creates effects such as feathered edges or soft silhouettes
during OPI image replacement.
Normal clipping paths cannot produce this effect-clipping paths
give only a hard edge to the image. Soft masks may give either a
hard or soft edge, depending on the design of the mask.
When enabled, the OPI engine looks inside the Adobe
Photoshop TIFF for an alpha channel to be used to create a soft
mask for the source image. If more than one alpha channel is
present, the first one is used-the remaining alpha channels are
ignored. When this check box is cleared, all the alpha channels
are ignored.
Note: This should not be confused with the Photoshop masking or
transparency features that are part of the Layers palette. Alpha channels
are created and edited using the Channels palette.
This feature is similar to the built-in capabilities of Adobe
InDesign, although it will work with QuarkXPress software or
any software that will generate OPI comments.
Make Drop Shadow Images Transparent
Select this check box to insert images into a layout that is
intended as a drop shadow for a second image that is placed on
top of the shadow image.
When this feature is enabled and the image is identified as a
drop shadow, the OPI engine applies the transparency blend
effect automatically. The image file names must use a special
extension that identifies them as drop-shadow images, rather
than normal (non-drop-shadow) images.
Transparent Drop Shadow Image Name Suffix
Sets the special extension for drop shadow images versus
normal images. The default extension is .shd. The value cannot
be blank.
Low Resolution Image Handling
Low Resolution Image Handling
Determines the system's response to low-resolution images.
The
of Contone Resolution Below (ppi)
box and the
of Bitmap
Resolution Below (ppi)
box determine which images are
considered low resolution.
206
Chapter 10—Refining
