Multichannel to CMYK problem

DS
Posted By
Dick_Shane
Oct 15, 2008
Views
991
Replies
11
Status
Closed
CS3

Hi,

I have a psd file which is in multichannel mode, with two channels – black and a pantone spot colour.

What’s the best way to go about converting this to CMYK – if possible?

Thanks!

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AR
alan_ruta
Oct 15, 2008
I have a method that seems very archaic but its the only one I know.

Add three blank channels (for cmy), move the gray channel to the black and then convert to cmyk. Then I take the spot channel and paste it to cmyk and do a channel mix to convert that layer to the proper process match equivalent.

alan
DS
Dick_Shane
Oct 15, 2008
Thanks, Alan – that’s pretty close to what I ended up doing. I pasted the two layers into a new empty CMYK document, then merged them with the Merge Spot Colour command.

Just never sure if there’s a ‘Multichannel to CMYK’ button lurking somewhere!
AR
alan_ruta
Oct 15, 2008
I was kinda hoping someone would have chimed and and said just do "command-this", but alas no luck.
NK
Neil_Keller
Oct 15, 2008
OK.

just do "command-this"

Neil

(Sorry about that — but if I didn’t respond, someone else would’ve.) 🙂
MO
Mike_Ornellas
Oct 15, 2008
Multichannel to Grayscale to CMYK then merge spot.

Make sure you have the black channel selected before you go from Multichannel to Grayscale due to a bug that will throw out the spot channel. The whole thing is retarded and will never be fixed.
AR
alan_ruta
Oct 15, 2008
Merge spot–it was so simple all along. Dopeslap to me for not reading the manual.

thanks
JM
J_Maloney
Oct 15, 2008
Yeah, thanks Mike.
DS
Dick_Shane
Oct 16, 2008
Thanks Mike.
MO
Mike_Ornellas
Oct 16, 2008
Everyone is welcome. It’s too bad the application is such Swiss cheese.
AR
alan_ruta
Oct 16, 2008
I assume there just isn’t enough call for it. If there had been a way to make spot channels work like cmyk (e.g. knockout as a preference rather than overprint), when I was doing magazine covers with the logo in a spot color it would have been a great time saver.

However the past couple of years I’ve done 99.9 percent 4c only, probrably like 99.9 percent of the user out there.

alan
MO
Mike_Ornellas
Oct 16, 2008
Sloppy is as sloppy does and is a reflection of sloppy coding.

MacBook Pro 16” Mockups 🔥

– in 4 materials (clay versions included)

– 12 scenes

– 48 MacBook Pro 16″ mockups

– 6000 x 4500 px

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