Soft proof adjustment sRGB profile not working (Affinity Photo for Windows 1.10.5.1342)

[Maarten Langeveld]

Hello developers,

 

Affinity Photo is a great product but regrettably soft proofing AdobeRGB images to sRGB gamut is not working on Affinity Photo for Windows 1.10.5.1342. 

Adding the soft proof adjustment layer with sRGB profile to an Adobe layer that contains colours that are out of sRGB gamut, nothing happens... As opposed to for example selecting Agfa: Swop Standard profile.

See attached document.

Would you please fix this in next release?

 

Kind regards,

Maarten

 

 

Affinity Photo for Windows1.10.5.1342 soft proof adjustment sRGB not working.afphoto

Edited July 15, 2022 by Maarten Langeveld
Textual correction

[Dan C]

Hi @Maarten Langeveld,

Thanks for your report!

I can confirm this is a known bug, logged with our developers - so I'll be sure to 'bump' this now using your document example.

We hope to have this fixed in a future version, I hope this helps

[PixelEngineer]

On 7/15/2022 at 10:19 AM, Dan C said:

Hi @Maarten Langeveld,

Thanks for your report!

I can confirm this is a known bug, logged with our developers - so I'll be sure to 'bump' this now using your document example.

We hope to have this fixed in a future version, I hope this helps

Hi @Dan C 

In the Adobe forums there are many users having the same question, as to why when soft proofing from AdobeRGB to sRGB, they are not seeing a change in color. There appears to be an answer for this. An expert wrote a paper on AdobeRGB and sRGB color space. In the paper he explains why many people get confused when comparing these spaces.

Source:
Solved: Soft Proofing not working for sRGB - Adobe Support Community - 12111557
 

You can read a paper that he wrote on AdobeRGB and sRGB color space in the link below.
Color Numbers and Color Gamut by Andrew Rodney author of "Color  Management for Photographers"
http://digitaldog.net/files/ColorNumbersColorGamut.pdf

FYI: In the sample files that were uploaded in both of these threads,  in the layers panel, the AdobeRGB photo on the top layer is not exactly the same as the AdobeRGB photo in the bottom layer.  There is a "shift" in a part of the photo. So it was modified. They need to be exact duplicates. This can throw a tester off. Just wanted you to be aware of that.

[Dan C]

Many thanks for letting me know, and for the extra due diligence taken here, it's certainly appreciated!

I'll be sure to pass this information through to our team who are investigating this issue further internally

[lacerto]

Obsolete.

[pbasdf]

In my experimentation, I have found that the problem with Soft Proofing to sRGB is very specific to the sRBG IEC61966-2.1 profile.  I found that if I use a different sRGB profile, the soft proofing appears to work.  The document shown below is in Adobe RGB.  The rectangles are, from top to bottom (on the canvas and in the layer stack)

(1) a rectangle filled with a colour gradient from RGB 0,255,255 to 0,255,0.  No adjustments.

(2) an identical rectangle with a Soft Proof adjustment using the sRGB2014 profile available from the ICC (https://www.color.org/srgbprofiles.xalter).

(3) an identical rectangle with a Soft Proof adjustment using the sRGB IEC61966-2.1 profile.

(4) the first rectangle, exported to TIFF using sRGB IEC61966-2.1 (profile embedded), placed within this document.

Note that (I hope this comes out in the screenshot):

(3) appears identical to (1), ie soft proofing to sRGB IEC61966-2.1 has no discernible effect,

(2) is different from (1), ie soft proofing to sRGB2014 does have an effect, and

(2) appears identical to (4), ie soft proofing to sRGB2014 seems to have the same effect as converting to sRGB IEC61966-2.1. 

For information, I use a 2019 iMac running macOS Monterey 12.5; I assume the sRGB IEC61966-2.1 profile derives from there.  In fact, as a separate test (not shown), I have copied this profile and used the Mac's ColorSync utility to modify JUST the "desc" tag in the profile: soft proofing with this seemed to work identically to the sRGB2014 profile from the ICC.

I hope all that is useful for those investigating the issue, and also hopefully provides a workaround for those who want to Softproof sRGB in the meanwhile: head over to the ICC and install one of their sRGB profiles (even if you only use it for Softproofing, not for conversion).

[lacerto]

Obsolete.