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Known Participant
April 26, 2017
Question

Spot color previews affected by RGB channels in CC2017

  • April 26, 2017
  • 1 reply
  • 459 views

Hi,

  I make spot color separations for screenprinting by building spot color channels over RGB and then converting to and saving as a multichannel DCS/EPS.

I will have a solid substrate color spot color channel that is first in the order and then more spot color channels under that.  When I wanted to preview my work, I just set all of the spot color channels on and the substrate color masked the RGB so I could see the results of my work in just the channel view. The preview with just the spot colors on would not change whether the RGB channels were on or not

Now, after updating to CC2017.1.0, the channel preview changes when I toggle the RGB channels on or off. They never did this before.  In our office we have older versions running and the same file behaves correctly, but on my station with the latest, I get different blending depending on whether the RGB preview is toggled on or off. It doesn't even matter if there is anything on the RGB channels to blend. It behaves the same whether there is any artwork on any layer or not. It behaves this way on older files created with older versions on the my updated sattion, but on other stations running older, it doesn't

It only does this in RGB. If I convert to CMYK, the behavior doesn't occur. I prefer working in RGB.

Is there any way to change this behavior? what is causing this?

See attached screenshots

Thanks!

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    1 reply

    Participating Frequently
    July 28, 2020

    Hi Shane.

    Did you ever come up with answer for this issue? I am having the same problem with my spot channel seps since updating to PS2020 and it's driving me nuts trying to figure iout why it's happening. Any light you could shed on this for me would be greatly appreciated!

    Thanks - Gary

    Participating Frequently
    July 28, 2020

    Thanks for responding. I know your post was old, but it was describing my
    exact issue. The solidity of the spot channels doesn't make a difference
    with the rgb channels on. What does solve the issue is converting to cmyk?

    This issue just started happening last week, so either I have
    inadvertently changed something, or a psd update has. Your right about the
    OP responding. I'll make a new post and see if I get any responses.

    --
    *Gary Lick • *President • Midnight Impressions, Inc.

    [Please do not post contact details in this forum]

    Participating Frequently
    July 28, 2020

    I'm running 21.2 as well.

    Here is a sample file. The 286 displays at about 50% with the rgb channels
    turned on
    on my machine.

    --
    *Gary Lick • *President • Midnight Impressions, Inc.

    [Please do not post contact details in this forum]