CMYK and Spot Colours


hi, have cmyk image of green vegetables , due colour restrictions on our printing press need move contents of cyan channel , new pms 307 spot channel , contents of magenta channel new pms 186 spot channel. process of doing fine when image not displaying correct on screen. of course expect image different greens turning brownish khaki colour not right. have proofing software can run high quality proof of original cmyk image , convert cyan 307 , magenta 186 outside of photoshop. proof shows adjustment expect no near can see in photoshop when make change.

to further validate if wrong in photoshop have used same image , created 4 new spot channels in photoshop using process cyan, magenta, yellow , black pantone solid coated library. have transferred contents of each original cmyk channel relevant new spot channels , image not displaying same original cmyk channels. image dirtier original can't understand considering new process spot channels should same cmk channels. way image displayed how saves , prints.

has ever encountered before or know work around?

and color management set-up? hardware? version of ps? aside that, cmyk created spot color channels still different standard cmyk due underlying logic.

 

mylenium



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