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RGB colour range when opening some images is now CMY


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Hi,

I'm sure this is a problem with my understanding, but I've never seen a photo editor do this before, and despite googling, I can't find a solution. When opening many images, on the colour panel, instead of instead of the usual RGB slider colour ranges (black to red, green and blue), the ranges are cyan, magenta and yellow to white. Did a default change in an update, or did I accidentally change a setting? I'm used to working entirely in RGB and would like to get back to that colour space.

This is what it looks like now - https://imgur.com/a/4hg8OU8

New.png

Edited by megapleb
attached screenshot
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Welcome to the forums @megapleb

The screen-grab in your link shows RGB sliders so I can’t see what the problem is.

Note: It’s generally best to give us full-screen screenshots (they give us much more information) and attach them directly to your post rather than adding a link to another site (which some users may not want to go to, for whatever reasons).

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Hi, Thanks for the response. The problem is the range on the sliders. Instead of being black to red, black to green and black to blue, as they always used to be, they are now CMY to white. 

Edited by megapleb
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Hi @megapleb,

Welcome to the Affinity Forums :)

This would indicate your document colour format is currently CMYK - which may have been set automatically depending on the image you opened in Affinity.

To change the document colour format, please navigate to Document > Convert Format / ICC Profile, then in the dialog that opens change the Format to RGB/8 and the Profile to sRGB IEC61966-2.1 and click Convert.

You should find the colour sliders are now displayed as expected!

See: 

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As I said in my previous post, I’m seeing the normal RGB sliders, and the same in your latest post (thanks for attaching it), so I can’t see what the problem is.
I’ve attached two screen-grabs, the first is RGB sliders, the second is CMYK sliders.

image.png.1a8ee10863469774c17b00beb1d14ec4.png

image.png.cb22b50c21e356f53635fc657c5ea822.png

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2 minutes ago, GarryP said:

As I said in my previous post, I’m seeing the normal RGB sliders, and the same in your latest post (thanks for attaching it), so I can’t see what the problem is.
I’ve attached two screen-grabs, the first is RGB sliders, the second is CMYK sliders.

image.png.1a8ee10863469774c17b00beb1d14ec4.png

image.png.cb22b50c21e356f53635fc657c5ea822.png

Hi Garry. The problem is I want the sliders to look as below, which is how they always used to be. Sorry if I am confusing my terms, but I believe my desired result is clear.

Old.png

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@GarryP The sliders themselves are as expected, its the colours shown behind each slider that the user is trying to change.

In a default RGB document, the colours shown in the sliders are Black > Red, Black > Green & Black > Blue, respectively.

image.png

In a CMYK document (or with certain colour profiles) these sliders instead display as Cyan > White, Magenta > White & Yellow > White, respectively.

image.png

The sliders will still perform the same actions, but the user prefers the visual representation of Black > RGB, respectively. 

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7 minutes ago, Dan C said:

Thanks for the further screenshot - this may be due to your colour profile / monitor profile in use, as I suggested above, what happens if you use the default sRGB IEC61966-2.1 profile in your document?

Nothing changes. I also changed the preferences to sRGB IEC61966-2.1 for RGB, closed the app, reopened, and created a new file. The colour ranges on the sliders remain as before.

I have no recollection of changing any of the colour settings before I encountered this problem today.

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2 minutes ago, GarryP said:

Your original example showed RGB sliders, your next example showed RGB sliders, your full-screen screenshot showed RGB sliders.
As far as I can tell you are seeing RGB sliders but calling them CMYK sliders for some reason.

The sliders are labeled RGB, Garry, but look at the colors (fill) shown within them. Why is the R slider showing a Cyan color, the G showing a Magenta color, etc.? That is the question.

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4 minutes ago, GarryP said:

Your original example showed RGB sliders, your next example showed RGB sliders, your full-screen screenshot showed RGB sliders.
As far as I can tell you are seeing RGB sliders but calling them CMYK sliders for some reason.

My terminology was incorrect, apologies. They are both RGB sliders, the problem is the colour range within the sliders.

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Thank you for trying that and I'm sorry to hear that hasn't helped!

Can you please open Windows Run (Windows Key + R) then paste the following and press OK:

colorcpl

In the dialog that opens, make sure your primary monitor is selected in the dropdown list, then provide a screenshot of this for me here? :)

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34 minutes ago, megapleb said:

This is what it looks like now - https://imgur.com/a/4hg8OU8

New.png

If you slide those 3 sliders all the way to the left, what happens?

To save time I am currently using an automated AI to reply to some posts on this forum. If any of "my" posts are wrong or appear to be total b*ll*cks they are the ones generated by the AI. If correct they were probably mine. I apologise for any mistakes made by my AI - I'm sure it will improve with time.

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9 minutes ago, carl123 said:

If you slide those 3 sliders all the way to the left, what happens?

Interesting. It goes back to looking normal. But if I move any of the sliders, strange things start to happen. This is on a blank new document.

Colour 2.png

Colour 3.png

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31 minutes ago, walt.farrell said:

That is the question.

Because the color/gradient on the slider does not show the intensity of the color component (it would always be the same, and can be easily imagined from the position of the slider, or from the given numerical value), but the color to which the selected color changes after moving the slider to the given position.

Edited by Pšenda

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6 minutes ago, megapleb said:

But if I move any of the sliders, strange things start to happen

What's strange about it?

Looks normal to me

To save time I am currently using an automated AI to reply to some posts on this forum. If any of "my" posts are wrong or appear to be total b*ll*cks they are the ones generated by the AI. If correct they were probably mine. I apologise for any mistakes made by my AI - I'm sure it will improve with time.

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Up until today, if I moved the G slider to 255, the colour ranges shown on R and B would have remained black to red, and black to blue respectively.

It seems to have changed from absolute colour values, to showing the range relative to the colour currently selected. I can see how this makes sense, and could be useful, but it's not how I'm used to working.

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25 minutes ago, GarryP said:

Aargh! I’m a total numpty. Yes, you’re correct, the fills are wrong and I didn’t notice it.

Not to worry Garry, I'm blaming the heat in the UK today - as clearly I'm not thinking straight either as there's no bug here! :$

@megapleb the reason the colours change in these sliders is due to your currently selected colour - with White selected the RGB sliders will display in Cyan, Magenta & Yellow, with Black selected you will see Red, Green & Blue.

This is simply how the colour sliders change with the currently selected fill, to show how your colour will change when increasing each slider.

For example, with White selected, moving the R slider towards the Cyan colour in the slider will give you a Cyan coloured fill, as you now have 0,255,255 selected.

The colour studio sliders are working as expected here, and you can find out more information regarding this below:

https://affinity.help/photo/English.lproj/index.html?page=pages/Clr/selectingClr.html?title=Selecting colours

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13 minutes ago, Dan C said:

Not to worry Garry, I'm blaming the heat in the UK today - as clearly I'm not thinking straight either as there's no bug here! :$

@megapleb the reason the colours change in these sliders is due to your currently selected colour - with White selected the RGB sliders will display in Cyan, Magenta & Yellow, with Black selected you will see Red, Green & Blue.

This is simply how the colour sliders change with the currently selected fill, to show how your colour will change when increasing each slider.

For example, with White selected, moving the R slider towards the Cyan colour in the slider will give you a Cyan coloured fill, as you now have 0,255,255 selected.

The colour studio sliders are working as expected here, and you can find out more information regarding this below:

https://affinity.help/photo/English.lproj/index.html?page=pages/Clr/selectingClr.html?title=Selecting colours

I'm really confused. Did I just imagine for the last year that the sliders worked in an absolute manner with fixed ranges within Photo (as I'm used to them doing in Photoshop) rather than relative ranges based on the currently selected colour?

Is there any way to get the sliders to operate in a fixed range (black to R, B, G)?

Edit - I understand it's more useful this way, as you can see how moving each slider will change the colour. What I'm asking for will provide less information. I just want to check I'm not crazy. There's no way I didn't notice this for the last year. 

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