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Can you demonstrate the effect or lack of it that you are seeing?

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18 minutes ago, Jörg_R said:

"Blur Tool"
Why is it possible to adjust the opacity, the flow and the hardness of the blur tool from 0 to 100 % when even at the highest strength almost no change can be seen?

I have to admit that the blur tool is so very subtle that many times I won't use it. I will use a Live filter with a lot of masking.

Mac Pro (Late 2013) Mac OS 11.7.1 
Affinity Designer 2.0.0 | Affinity Photo 2.0.0 | Affinity Publisher 2.0.0 | Beta versions as they appear.

I have never mastered color management, period, so I cannot help with that.

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Also the 100px is not the end of the blur, type in 200 or 300px

image.png.5198ee4b1e592a31a2ab613108c8758d.png

iMac 27" Late 2019 Fully Loaded and running Monterey 12.6.1, iMac 27" Late 2013 running Catalina 10.15.7 - Affinity Designer, Photo & Publisher V1 & V2, Adobe, Inkscape, Blender, C4D, Sketchup + more... XP-Pen Artist-22E, - iPad Pro 12.9 B|  

Affinity Help - Affinity Desktop Tutorials - Feedback - FAQ - most asked questions

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11 minutes ago, Jörg_R said:

Where is the mistake?

The only way I can reproduce what I see in the video is if I do not click drag with the trackpad or my pen graphic tablet.

A thing to consider is what brush you are using. I chose the most basic brush and had no problem blurring (quite slight I will admit) If you have a brush that is quite transparent to start with then the effect will be almost none existent. Try with a brush from the Basic category and with a hard edge too.

Mac Pro (Late 2013) Mac OS 11.7.1 
Affinity Designer 2.0.0 | Affinity Photo 2.0.0 | Affinity Publisher 2.0.0 | Beta versions as they appear.

I have never mastered color management, period, so I cannot help with that.

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You need a brush from the brush palette to make it work, the last used brush will be chosen by default.

Mac Pro (Late 2013) Mac OS 11.7.1 
Affinity Designer 2.0.0 | Affinity Photo 2.0.0 | Affinity Publisher 2.0.0 | Beta versions as they appear.

I have never mastered color management, period, so I cannot help with that.

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8 minutes ago, Jörg_R said:

this is no brush, this the Softener Tool!

If you use the English User Interface, or the English Help, it is the Blur Brush Tool.

image.png.426ee9f93fb8c9355d299af7aee72649.png

-- Walt

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6 minutes ago, Jörg_R said:

Ah ok, Walt... But it still does not work properly

Does it work if you choose a Basic Brush from the Brushes palette?

1458413318_ScreenShot2022-01-16at11_28_44AM.png.a9e1e9e7dd3d52a25e6f42625203c925.png

Mac Pro (Late 2013) Mac OS 11.7.1 
Affinity Designer 2.0.0 | Affinity Photo 2.0.0 | Affinity Publisher 2.0.0 | Beta versions as they appear.

I have never mastered color management, period, so I cannot help with that.

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28 minutes ago, Jörg_R said:

Ah ok, Walt... But it still does not work properly

What OS do you use?

If Windows, do you have Hardware Acceleration on in your Affinity Preferences? If so, try turning that option off.

-- Walt

Desktop:  Windows 11 Home, version 21H2 (22000.613) 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 
Laptop:  Windows 10 Home, version 21H2 (19044.1706) 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
        Affinity Photo 1.10.6 (.1665) and 2.0.0 / Affinity Designer 1.10.6 (.1665)  and 2.0.0 / Affinity Publisher 1.10.6 (.1665)  and 2.0.0
iPad Pro M1, 12.9", iPadOS 16.1.1, Apple Pencil 2, Magic Keyboard

      Affinity Photo 1.10.6 and 2.0.2 / Affinity Designer 1.10.6 and 2.0.2 / Affinity Publisher 2.0.2

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2 hours ago, Jörg_R said:

if  do the same in photoshop with a resolution with 72 dpi I cannot use 100 % strength because it is too strong, but here I see nearly nothing.

Where is the mistake?

I think you are seeing very little effect because you have the brush hardness set to 3%:

1272475707_blurbrushhardness.jpg.46e3cd4dce4f5e5e35f2ba9689094471.jpg

But even at 100% hardness, like @Old Bruce mentioned, the effect of the AP Blur Brush Tool is fairly subtle, so unless there is a lot of very strong pixel-to-pixel differences, you probably won't see a lot of changes.

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The blur brush uses a box blur with radius 1px. It gives a very light blur effect on hard edges. 


If you want a stronger blur effect, you can use a different non-destructive approach:

  • Add any live blur filter (e.g. Gaussian blur)
  • set radius as required e.g. 1, 2, 4px.
  • invert layer
  • use soft basic round brush in white
  • use low brush opacity e,g. 12-25%
  • brush over blur layer to apply effect
  • if too strong reduce layer opacity 
  • or use erase brush to remove blur

 

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