Clip Studio Paint .clip file exported as .psd is not playing well in Photoshop

[#1]

Hi,

I work at a printing company, we use PS exclusively.  We are working on both Windows and Macs, all current OSs.  All current versions of PS.   I have a client who sent me an image that he created in Clip Studio Paint (which I've never used), saved as a .clip, then saved his flattened final as a TIF, which he sent to us.  I can't post a screenshot of it as it's his copyright, but it's a graphic that's meant to have both red and blue screeentones outside the black outline (like an old 3D effect).  However, the blue/cyan tone will not shift when we print it.  We try manipulating the color any number of traditional ways in PS and on screen, you can see the changes.  The changes are not reflected in the print at all.  It's the strangest thing.  I asked him to send me a PSD so he converted the CLIP to PSD and sent me the layered file.  The blue layer does not behave like a color layer in a PS file.  It can only be altered at the extremes of the spectrum.  Exposure is either all on or all off, saturation is all or none.  

I am wondering if Clip Studio Paint treats colors so very differently that it arrives at a color in a completely different way than PS.  Forgive my ignorance up front, but I am not an engineer and don't pretend to know how these softwares are built.  I just know that a color layer that has been converted to a PSD from a .CLIP does not actually behave like a PSD.  We are flummoxed over here.  

Any help you gals and guys can offer would be tremendously helpful.  If I am doing a poor job of describing the problem, I do apologize in advance.

Thank you,

Mike

[NB, colourmanagement]

@   "no forum username"?  I would hope that once a file is in TIFF format it should be handled normally by Photoshop no matter the source. 

I can imagine that a strange PSD might have issues with unusual layers, but these are, of course, pre-rendered when the TIFF is made. 

Did you try converting their saved PSD to a TIFF in PS?

Might this converter work on the .clip file you have?

Do your client files have an embedded ICC profile? If not then it will be presumed by PS to be the default working space.

about ICC profiles

If you are making changes in colour to a TIFF in PS and can view those changes onscreen (ideally working a calibrated and profiled monitor screen) then maybe something is amiss in the print process?

Could those edited colours perhaps be outside of printer gamut (range) -  maybe try softproof and gamut warning in PS using the printer ICC profile to test that. Photosop's "Threshold" feature in Levels can help assess colour that’s butting up against the edge of a colour space too. 

Perhaps get your client to make a test file using the same colours (so that it exhibits the problem) that you can share here?

I hope this helps
neil barstow, colourmanagement net - adobe forum volunteer - co-author: 'getting colour right'
google me "neil barstow colourmanagement" for lots of free articles on colour management
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[c.pfaffenbichler]

Could you please post screenshots taken at View > 100% with the pertinent Panels (Toolbar, Layers, Channels, Options Bar, …) visible? 

You can zoom on a nondescript area of the image or Mosaic the screenshots to make copyright-sensitive parts unrecognizable, but in my opinion screenshots are often the bare minimum to allow others to help trouble-shoot Photoshop-issues. 

[c.pfaffenbichler]

What are the image’s Color Mode and bit depth?