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P: Group linear dodge may acts different from the layer linear dodge

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Community Beginner ,
Mar 03, 2016 Mar 03, 2016

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Hi everyone. I found that when choosing group blending mode as linear dodge, it would act in a differently from simply apply a linear dodge layer. An example:

RackMultipart2016030396746zrsd-c38079b8-fb79-42cc-9d70-ce640bb2ea7f-59737878.pngRackMultipart2016030396746zrsd-c38079b8-fb79-42cc-9d70-ce640bb2ea7f-59737878.png RackMultipart2016030331194bqoq-667f0203-9ccd-44e5-87af-38b5792eb4b1-401874920.pngRackMultipart2016030331194bqoq-667f0203-9ccd-44e5-87af-38b5792eb4b1-401874920.png


Upper one the adjust layer, lower one the 'adjust group'. (in case these helps: Layer 1 consists of deep blue& white, the two layers are white rectangles blurred using Gaussian blur.)


The group only contains one layer in normal mode which has identical pixels as the adjust layer does.

Same thing happens for color dodge mode, but not for lighten, screen and lighter color. Seems blending type related.

 

Searched for blending methods and group blending mode, but came to that in this case they should work in the exactly same way... Did I missed or misunderstood anything? 

This is a quite interesting feature but I'm curious about the mechanism.

Thanks in advance.

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correct answers 1 Correct answer

Adobe Employee , Nov 02, 2016 Nov 02, 2016

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LEGEND ,
Mar 03, 2016 Mar 03, 2016

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Which specific version of Photoshop are you using?
Which OS version?

Yes, the blend modes should behave the same way, but some of the behavior depends on precisely what settings you have applied to each layer and group.

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Community Beginner ,
Mar 03, 2016 Mar 03, 2016

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CC2015 and OS X 10.10.5 yosemite, running on a macbook pro with retina. Didn't test for other PS versions yet.
I posted in general forum too and there found that if we turn off the "Transparency Shapes Layer" in the Layer Style, the adjust layer would work as the linear dodge group does. Did some further search but still lost. Groups  have the checkbox on for default, layers too.

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LEGEND ,
Mar 03, 2016 Mar 03, 2016

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Have you installed the 16.1.2 update?

We'd still need to see the PSD document to check all the structure options...

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Community Beginner ,
Mar 03, 2016 Mar 03, 2016

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Not yet. Actually I was following a tutorial posted at least 2 years earlier and found this behaviour in step4... note that the author used this 'feature' on purpose (with no explanation).
Here's a sample PSD doc, hope it helps.
(Edited for a typo)

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LEGEND ,
Mar 03, 2016 Mar 03, 2016

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Ok, we have the file and will take a look.

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Community Beginner ,
Mar 03, 2016 Mar 03, 2016

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Thanks a lot!

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Adobe Employee ,
Nov 02, 2016 Nov 02, 2016

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This should work correctly in CC 2017, released this morning: http://blogs.adobe.com/photoshop/2016/11/keep-creating-a-guided-tour-through-the-latest-photoshop-up...

Senior Product Manager - Customer Advocacy - Digital Imaging

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Community Beginner ,
Nov 20, 2016 Nov 20, 2016

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Thanks for the replay and fix! 

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Community Expert ,
Aug 30, 2017 Aug 30, 2017

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A user reported a similar-looking bug on the adobeforums, with 2017.1.1 : https://forums.adobe.com/thread/2376283

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LEGEND ,
Dec 03, 2017 Dec 03, 2017

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This issue still exists. It is not fixed in the current version of Photoshop CC 2018 19.0 release. Color dodge only works if applied to a layer and you uncheck "Transparency Shapes Layer". It will not work at all if you apply the Color Dodge to a folder.

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People's Champ ,
Jun 30, 2019 Jun 30, 2019

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This issue was never fixed.  Still not fixed in 20.05.

In fact i'd go so far as to say some of photoshop layer blend modes have been broken since photoshop 6 (circa 2001)
That's when adobe made changes to layer blend modes like color dodge and ever since layer blend modes have been broken in one form or another.

In fact in photoshop 20.0.5 there is a bug with Opacity Fill on layer groups, the exact same bug
that is the reason for the ops post here in the first place.

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Community Beginner ,
Jul 09, 2019 Jul 09, 2019

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It's been like 2 years and this issue still hangs on somehow (just a few seconds ago I got a email where a comment said it's not fixed even in 20.05 and had been broken since 7 ??)... I sorta regret that I didn't test the fix and follow up more properly back then.

I'm not a active photoshop or forum user, but this doesn't sound good. Can we re-open this issue by any chance? If anyone would be willing to submit a new ticket, please feel free to use or refer to stuffs I described here, many thanks.

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People's Champ ,
Jul 09, 2019 Jul 09, 2019

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Apparently there is still an issue with this in photoshop 20.0.5 as demonstrated here:

https://forums.adobe.com/thread/2634249


It's easy to replicate the issue in photoshop 20.0.5

 

1. Make a new document in sRGB, fill with 50% grey.

 

On the grey layer use a soft brush set to white and Linear Dodge (Add) in the tool options bar

 

2. Make a new layer, paint on that layer with the same white brush and then change the layer   blend mode to Linear Dodge (Add) and uncheck Transparency Shapes Layer in the Layer Style Blending Options.

 


Image is not available

 

3. Make a new layer, put the layer in a Group, paint with the white brush on the layer in the group. Then change the Group Blending Mode to Linear Dodge (Add). Now here's the problem that even if you uncheck Transparency Shapes Layer for the Group it still doesn't match the other two, assuming the other two is how it's supposed to look.

 


Image is not available

 

You can fix the group by filling layer 2 in the group with Black in the Behind blend mode, but for some other blend modes the fix is not so easy or it might not work on a particular document for whatever reason.

 


Image is not available


After further investigation it actually looks like the bug has to do with the Fill Opacity on Groups.

 

If you check Transparency Shapes Layer and reduce the Fill Opacity to 99 then it looks like the other two layers.

 


Image is not available



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People's Champ ,
Jul 10, 2019 Jul 10, 2019

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This post has another file for testing:

https://forums.adobe.com/thread/2634249

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People's Champ ,
Jul 10, 2019 Jul 10, 2019

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LATEST
This post has another file for testing:

https://forums.adobe.com/thread/2634249

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