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Question regarding the color replacement brush


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I'm trying to paint the swan below a turquoise color.  I originally used the recolor adjustment, which looks pretty good.  But I thought since the color replacement brush maintains shadows and highlights, it would look better.  Using the color replacement brush, I can only obtain a slight color change as shown on the birds wing on the right.  I'm guessing that the brush is not a good choice for light objects like this swan?

image.thumb.png.ca2e52e2fc2875371ad5c121bac65a90.png

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The colour replacement brush acts more like a hue replacement brush, you can test this out by creating a new fill layer changing it to the colour you want and then changing the blend mode to hue, you will notice the bill will change to a strong colour and any part of the swan that has some RGB value will get more colouring, but pure white will be left untouched.

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You could select the area you want to modify, apply a Channel Mixer adjustment, and then adjust the colour values and blend mode to taste

Here I dialled down the red value in the red channel from 100% to 41%, and set the blend mode to Multiply.

Before:

293269244_Screenshot2021-04-17at10_00_14.png.819a7a51e65ec8c20a1656c6c364eb89.png

After:

185982874_Screenshot2021-04-17at10_05_11.thumb.png.0b7135b63348476e5c5ca574c54c80e7.png

The orange bill is masked out and not affected by the adjustment. Play with the values in the other channels to modify the colouring.

(BTW I'm pretty sure that's a swan, not a goose 😆)

Affinity Photo 2.0.3,  Affinity Designer 2.0.3, Affinity Publisher 2.0.3, Mac OSX 13, 2018 MacBook Pro 15" Intel.

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4 hours ago, firstdefence said:

The colour replacement brush acts more like a hue replacement brush,

You could even say it is a hue replacement brush :)

From the Help:

Quote

The targeted color's hue will be replaced with the current Primary color's hue, while retaining saturation and lightness values of the original pixels.


 

-- Walt
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6 hours ago, h_d said:

You could select the area you want to modify, apply a Channel Mixer adjustment, and then adjust the colour values and blend mode to taste

Here I dialled down the red value in the red channel from 100% to 41%, and set the blend mode to Multiply.

Before:

293269244_Screenshot2021-04-17at10_00_14.png.819a7a51e65ec8c20a1656c6c364eb89.png

After:

185982874_Screenshot2021-04-17at10_05_11.thumb.png.0b7135b63348476e5c5ca574c54c80e7.png

The orange bill is masked out and not affected by the adjustment. Play with the values in the other channels to modify the colouring.

(BTW I'm pretty sure that's a swan, not a goose 😆)

Thanks you that works very well!  And also maintains the highlights and shadows.  And I meant to says swan, not goose!  :)

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6 hours ago, walt.farrell said:

You could even say it is a hue replacement brush :)

Making it the worst named tool in all of the Affinity apps. :39_angry:

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12 hours ago, R C-R said:

Making it the worst named tool in all of the Affinity apps. :39_angry:

Hm. "vector brush" is a strong competitor, isn't it?

»A designer's job is to improve the general quality of life. In fact, it's the only reason for our existence.«
Paul Rand (1914-1996)

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9 hours ago, Andy05 said:

Hm. "vector brush" is a strong competitor, isn't it?

I think that has to take second place behind the Color Replacement Brush because there are a couple of for-real vector brushes, even though they are trivial ones.

All 3 1.10.8, & all 3 V2.4.1 Mac apps; 2020 iMac 27"; 3.8GHz i7, Radeon Pro 5700, 32GB RAM; macOS 10.15.7
Affinity Photo 
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