Curves not exporting in pdf

[GeirSol]

Hi!

I'm exporting jpeg and pdf
and jpeg is fine, but pdf lacks a curves-adjustment for the image.

What's wrong here and how to fix?

Flyer v0.5.pdf

[PaulEC]

Would it be possible to attach the Affinity file with the curves adjustment?

[GeirSol]

18 minutes ago, PaulEC said:

Would it be possible to attach the Affinity file with the curves adjustment?

pm'd

[thomaso]

The PDF export settings can force the adjustment to be ignored on export. Make sure that rasterization is not disabled.

What is "pm'd"?

[PaulEC]

As thomaso says, it's probably due to the PDF settings you are using. I've tried exporting the file myself, and there doesn't seem to be any visual difference between the JPEG and PDF versions.

[GeirSol]

19 minutes ago, thomaso said:

What is "pm'd"?

Personal message

[GeirSol]

11 minutes ago, PaulEC said:

As thomaso says, it's probably due to the PDF settings you are using. I've tried exporting the file myself, and there doesn't seem to be any visual difference between the JPEG and PDF versions.

 

Yes, now I get it right exported (Pdf for print)
Checked against "Pdf for press ready" and yes, that's the difference.

Can anyone explain why?

[GeirSol]

Guess I found it:
"Unsupported properties—only unsupported elements are rasterized in the exported file."
This was selected for press.

But, if the curve was unsupported, it should have been rasterized in the first place shouldn't it?

[PaulEC]

23 minutes ago, GeirSol said:

But, if the curve was unsupported, it should have been rasterized in the first place shouldn't it?

I would have thought so, but I'm afraid I don't know enough about the various PDF options to be able to say why it wasn't!

[GeirSol]

Thanks both!

[Old Bruce]

2 hours ago, GeirSol said:

Yes, now I get it right exported (Pdf for print)
Checked against "Pdf for press ready" and yes, that's the difference.

Can anyone explain why?

I think it is that PDF for Print is RGB and PDF Press Ready is CMYK.

[thomaso]

3 hours ago, GeirSol said:

But, if the curve was unsupported, it should have been rasterized in the first place shouldn't it?

Yes, it should. And it does to me successfully – unless I modify the export options after choosing this preset. Can you try once more and make sure that the preset field displays "press ready" when you hit the Export button?

24 minutes ago, Old Bruce said:

I think it is that PDF for Print is RGB and PDF Press Ready is CMYK.

"for Print" has "As document" set, so it can be RGB an/or CMYK, while "press ready" exports as CMYK, but it still can contain RGB images (the export option "convert" is not ticked). However, neither one of this presets nor the export colour space should cause an adjustment being ignored on export.

[GeirSol]

18 hours ago, thomaso said:

Yes, it should. And it does to me successfully – unless I modify the export options after choosing this preset. Can you try once more and make sure that the preset field displays "press ready" when you hit the Export button?

Sorry, I get the same error here.

[thomaso]

1 minute ago, GeirSol said:

Sorry, I get the same error here.

Can you upload a screencast showing the export setup with the 'Preview after export' option ticked + the exported PDF opened afterwards?

[GeirSol]

21 hours ago, thomaso said:

Can you upload a screencast showing the export setup with the 'Preview after export' option ticked + the exported PDF opened afterwards?

Sure, here:

Normally I'd skip the bleed here.

[thomaso]

56 minutes ago, GeirSol said:

Sure, here:

Sorry, I meant a video, not 3 screenshots.

On 9/3/2022 at 12:42 PM, PaulEC said:

As thomaso says, it's probably due to the PDF settings you are using. I've tried exporting the file myself, and there doesn't seem to be any visual difference between the JPEG and PDF versions.

What export preset did you use for your successful export?

 

[PaulEC]

7 minutes ago, thomaso said:

What export preset did you use for your successful export?

 

"PDF for Print"

[thomaso]

17 minutes ago, PaulEC said:

"PDF for Print"

If you still have the file: Does it ignore the adjustment if you export with "press ready"?

[PaulEC]

31 minutes ago, thomaso said:

If you still have the file: Does it ignore the adjustment if you export with "press ready"?

Sorry, I didn't keep the file after experimenting with it. FWIW I tend to use "PDF for Print" as my standard PDF export. To be honest, I don't really know much about the various PDF export options, so I tend to stick with what usually works best for me!

(EDIT! From a quick look at the default options in "PDF for Print" and "Press Ready", the only difference seems to be that the "Colour space" with "for Print" is set to "as in document" and with "press ready" it's set to "CMYK".)

[thomaso]

7 minutes ago, PaulEC said:

I didn't keep the file after experimenting with it.

@GeirSol, I am curious to experience different exports with your document. Could you upload it to the forum? (or dm?)

[Dan C]

@GeirSol, I too am interested to see a copy of this document, to see if I can pinpoint the exact cause of this.

If you wish to keep the document private, you can upload this here -

https://www.dropbox.com/request/Hk4HW9JTqmeQP3AWPjP2

If you use the above link, please let me know here once this has been uploaded. Many thanks in advance

[GeirSol]

1 hour ago, Dan C said:

@GeirSol, I too am interested to see a copy of this document, to see if I can pinpoint the exact cause of this.

If you wish to keep the document private, you can upload this here -

https://www.dropbox.com/request/Hk4HW9JTqmeQP3AWPjP2

If you use the above link, please let me know here once this has been uploaded. Many thanks in advance

File sent. Thanks!

[Dan C]

Many thanks for providing that for me!

On 9/3/2022 at 11:56 AM, GeirSol said:

Yes, now I get it right exported (Pdf for print)
Checked against "Pdf for press ready" and yes, that's the difference.

Can anyone explain why?

As others have mentioned above, the PDF result you're seeing differs as the colour space of the exported file has been converted. The Curves adjustment is still being correctly exported when using either of these options.

You can see this yourself by converting the document to CMYK before exporting:

If you don't wish for this to occur, ensure your PDF export settings are using Colour Space : As Document and Colour Profile : Use Document Profile and no conversion should happen

[GeirSol]

19 hours ago, Dan C said:

Many thanks for providing that for me!

As others have mentioned above, the PDF result you're seeing differs as the colour space of the exported file has been converted. The Curves adjustment is still being correctly exported when using either of these options.

 

Thank you very much!
Yes, I see it now.

How come that the change in color space gives such a huge difference?

And, when printed, isn't that always CMYK? So, how do I make sure the result is consistent?

[Dan C]

1 hour ago, GeirSol said:

How come that the change in color space gives such a huge difference?

The RGB and CMYK colour spaces can appear quite different, depending on the range of tones used in the document.

RGB is an additive colour system, where red light, green light, and blue light sources (eg pixels) combining to produce the image.

CMYK is a subtractive colour system, where cyan, magenta, yellow and black inks absorb light, "subtracting" the colors red, green and blue from white light.

This can mean that a bright RGB image can appear much more dull in a CMYK colour model.

1 hour ago, GeirSol said:

And, when printed, isn't that always CMYK? So, how do I make sure the result is consistent?

Many printers are CMYK, but some specific ones can be RGB. It is usually printer dependant whether an RGB or CMYK document is preferred, but if the file is in the incorrect colour space then the printer will convert this upon print.

Most users will begin by creating the document in CMYK, as required, so that there is no conversion when exporting or printing.

I hope this clears things up