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<ul class="navigation"><li class="prev"><a accesskey="p" class="prev" href="WSCC832F92-8FE5-4839-93D2-108942A68321a.html" title="Split channels into separate images"><img src="images/blank.gif" alt="Previous" width="17" height="17" /></a></li><li class="next"><a accesskey="n" class="next" href="WSA4A2F743-1D65-4299-B089-9A2200BD0962a.html" title="Delete a channel"><img src="images/blank.gif" alt="Next" width="17" height="17" /></a></li></ul><div class="hierarchy" id="hierarchy"><a href="WSfd1234e1c4b69f30ea53e41001031ab64-7701a.html">Selecting and masking</a> /
     <a href="WS6EC2A68B-AE8D-4987-87E2-28272B744445a.html"><b>Channels</b></a> 
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                <h1>
                    Merge channels
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                <div><div class="section"><p>Multiple
grayscale images can be combined as the channels of a single image. The
images you want to merge must be in grayscale mode, be flattened
(have no layers), have the same pixel dimensions, and be open. The
number of grayscale images you have open determines the color modes
available when merging channels. For example, if you have three
images open, you can merge them into an RGB image; if you have four
images open, they can become a CMYK image.</p>
<div class="tip"><img src="images/tip_help.png" />If you are working with DCS files
that have accidentally lost their links (and so cannot be opened,
placed, or printed), open the channel files, and merge them into
a CMYK image. Then resave the file as a DCS EPS file. </div></div>
<ol><li class="stepexpand"><span>Open
the grayscale images containing the channels you want to merge,
and make one of the images active.</span> <p>You must have more than one image open for the Merge Channels
option to be available.</p>
</li>
<li class="stepexpand"><span>Choose
Merge Channels from the Channels panel menu.</span></li>
<li class="stepexpand"><span>For Mode, choose the color mode you want to create. The
number of channels appropriate for the mode appears in the Channels
text box. </span></li>
<li class="stepexpand"><span>If necessary, enter a number in the Channels text box. </span> <p>If you enter a number that is incompatible with the selected
mode, Multichannel mode is automatically selected. This creates
a multichannel image with two or more channels.</p>
</li>
<li class="stepexpand"><span>Click OK.</span></li>
<li class="stepexpand"><span>For each channel, make sure the image you want is open.
If you change your mind about the image type, click Mode to return
to the Merge Channels dialog box. </span></li>
<li class="stepexpand"><span>If you are merging channels into a multichannel image,
click Next, and select the remaining channels. </span> <div class="note"><span class="notetitle">Note:  </span>All channels of a multichannel image are alpha channels
or spot channels.</div>
</li>
<li class="stepexpand"><span>When you have finished selecting channels, click&#160;OK. </span> <p>The selected channels are merged into a new image of the
specified type, and the original images are closed without any changes.
The new image appears in an untitled window. </p>
<div class="note"><span class="notetitle">Note:  </span>You cannot
split and recombine (merge) an image with spot color channels. The
spot color channel will be added as an alpha channel.</div>
</li>
</ol>
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