Converting multichannel EPS to multichannel TIFF

[cprvh]

Need to convert a CMYK+Spot EPS file to a CMYK+Spot TIFF. I have been reading what I can about the process, but must be missing something. I was able to create a new file with the exact same pixel dims and copy the channels into the new file. However, it is not quite right. Is there a clear cut tutorial somewhere that can help me?

Thanks!

 

[Tom Mann]

In what way is it not quite right?
Tom

 

[cprvh]

I copied the channels over to the new file. The new file was in the Multichannel color mode. Since I cannot save it as TIFF in that format, I changed to CMYK plus the spot channel. When I changed to CMYK the colors shifted.

The file I am working with is a profiling target. My RIP cannot use the DCS 2.0 format and they said to change to TIFF.

 

[Tom Mann]

Got it.

This is a fairly common problem and there is quite a bit available on the web about methods that will best preserve the original colors. Google {convert multi channel to cmyk photoshop}.

As one example, read all the way through:
http://planetphotoshop.com/duotone-vs-multichannel-round-2.html

HTH,

Tom

 

[Tom Mann]

PS - At the risk of stating the obvious, there are many different flavors of CMYK (ie, available as different output device profiles), as well as some generic CMYK profiles that can be used as working color spaces. In a process like this, you need to maintain solid color management practices, so be sure that at the very minimum, you soft proof using the CMYK device profile for your specific system.

T