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I have a colour photo, to which i add Black & White Adjustment layer, I want to adjust the RGB sliders so they only work on a selected area, not the whole B&W picture. I can't seem to figure how - I've tried using masks. Any advice, or are there any tutorials dealing with this? Thanks

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Hi ajw874

 

How about this:

 

Original coloured image:

5a972e0671120_ScreenShot2018-02-28at22_27_59.thumb.png.0ca7cdf92408cea2043d3a7f77e4badb.png 

 

Add two black and white adjustment layers, and nest them both inside the Background image layer (make sure you see the blue vertical bar as you drag):5a972e0c38417_ScreenShot2018-02-28at22_29_00.thumb.png.9ecb4028f1e8fcbf375ea4ae200b8b51.png

 

For now, close the sliders panels. 

 

Invert the upper black and white adjustment layer (Click once on it to select, then go to the Layer menu and choose Invert). You'll see a black area across the thumbnail:

 

5a972e0dde4be_ScreenShot2018-02-28at22_29_25.png.def07510f488a86eb5c25be029813954.png

 

 

Select the area you want to modify using your favourite selection tools:

 

5a972e0edc12d_ScreenShot2018-02-28at22_30_20.png.1ba12299055ec7fadc1f2a5eb2e73fcc.png

 

(My selection is very rough and ready, yours will be much better).

 

Fill this selection with white (you'll see the thumbnail change, the image won't at this stage):

 

5a972e0f8f76e_ScreenShot2018-02-28at22_30_49.png.5351470067aba72d20da3abaeaa5eae3.png

 

Deselect if you wish.

 

Double-click on the thumbnail in the upper Black and White adjustment to display the sliders. Drag them to your heart's content:

 

5a972e106c1af_ScreenShot2018-02-28at22_31_37.png.18994dff35dd927e2d5dc3f6d528600d.png

 

Hope this helps.

 

(Adjustment layers are their own masks, you don't need to create additional mask layers.)

 

H

 

 

 

Edited by h_d
Text amendment

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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6 hours ago, ajw874 said:

I have a colour photo, to which i add Black & White Adjustment layer, I want to adjust the RGB sliders so they only work on a selected area, not the whole B&W picture. I can't seem to figure how - I've tried using masks. Any advice, or are there any tutorials dealing with this? Thanks

 

If you want to apply an adjustment to just one area, make a pixel selection first. Such as the penguin on the left.

pen1.jpg.c20a38768acdac0a7fd6b46aafe83d2b.jpg

 

When you apply an adjustment layer (like B & W), it is applied to the selection area only.

pen2.jpg.a0a9567cb20084b2ac9d8d4374631a30.jpg

 

You could then invert the selection Select > Invert Pixel Selection and apply a different adjustment to that.

 

In this case a Recolour Adjustment, but it could be anything

penr.jpg.e75a1ad0b9583cd0285726ef40a006ca.jpg

The B & W adjustment is applied to the penguin on the left, the recolour adjustment to everything else (inverted selection).

 

re.jpg.7a02fa2bd2cf2969c59936ca01e447a6.jpg

.

The point being, the adjustment is only applied to the area that is selected when you add an adjustment layer.

 

 

Windows PCs. Photo and Designer, latest non-beta versions.

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Thanks h_d that's great, just what I want. Oddly though, it only works for me if I place the selected/white-filled layer underneath the other layer; instead of on top as you do. Guess I need to get my head around nesting layers.

Screen Shot 2018-03-01 at 00.00.38.png

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3 hours ago, owenr said:

h_d's b&w layers are mask-nested, whereas yours are clip-nested.

Which is why @h_d said:

5 hours ago, h_d said:

(make sure you see the blue vertical bar as you drag)

 

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 
1.10.8; Affinity Designer 1.108; & all 3 V2 apps for iPad; 6th Generation iPad 32 GB; Apple Pencil; iPadOS 15.7

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One of James Ritson's excellent tutorial videos explains the difference between clipping and masking.

 

The drag method used to achieve masking (when you get the vertical blue line before you drop the layer) is slightly fiddly, but works well once you get a feel for it.

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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44 minutes ago, h_d said:

The drag method used to achieve masking (when you get the vertical blue line before you drop the layer) is slightly fiddly, but works well once you get a feel for it.

When I first started using Affinity I thought that you had to drop the masking layer onto the narrow space to the right of the thumbnail of the masked layer (where the vertical blue line appears) but that is not true. Once I figured out that the masking layer can be dropped onto the thumbnail of the masked layer itself, I realized that it was not as fiddly as I first thought.

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 
1.10.8; Affinity Designer 1.108; & all 3 V2 apps for iPad; 6th Generation iPad 32 GB; Apple Pencil; iPadOS 15.7

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  • 9 months later...
7 minutes ago, kurtographer said:

None of my adjustments for black and white  seem to do anything, what am i doing wrong?

What have you tried? Some screenshots (including the Layers panel) and a description of your process would help.

Have you looked at Serif's tutorials for Photo, especially Creative Black and White?

-- Walt
Designer, Photo, and Publisher V1 and V2 at latest retail and beta releases
PC:
    Desktop:  Windows 11 Pro, version 23H2, 64GB memory, AMD Ryzen 9 5900 12-Core @ 3.00 GHz, NVIDIA GeForce RTX 3090 

    Laptop:  Windows 11 Pro, version 23H2, 32GB memory, Intel Core i7-10750H @ 2.60GHz, Intel UHD Graphics Comet Lake GT2 and NVIDIA GeForce RTX 3070 Laptop GPU.
iPad:  iPad Pro M1, 12.9": iPadOS 17.4.1, Apple Pencil 2, Magic Keyboard 
Mac:  2023 M2 MacBook Air 15", 16GB memory, macOS Sonoma 14.4.1

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