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This lesson demonstrates how to convert parts of a coloured image into monochrome - this technique is known as colour popping. To work along, you will find the start images Here. Unzip the file and open the images onto Photoshop’s workspace.
An alternative colour popping tutorial can be found Here.
Undo and Navigation Steps
Two ways of undoing steps are from the top menu, Edit then Step Backwards. Alternatively, click a previous snapshot in the History Palette.
Navigate (zoom in and pan) your image using the Navigator Palette,
or the Zoom Tool. 
Activate The Hand Tool by tapping the Spacebar, keeping the Spacebar pressed, pan your image in the usual way. 
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Open the start images onto Photoshop’s workspace.
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Then from the toolbar, activate the Polygonal Lasso Tool.
Polygonal Lasso Lesson Here!
And set the following attributes in its Options bar.
Note
The Add to selection setting enables you to isolate more than one area of an image with a marquee - and it can be used to isolate single areas, also.
Tip - retracing your steps
Whilst you are stretching the line, and before the marquee is applied, to go back one
step, press either the Delete or the Backspace key of your keyboard - press your chosen key for however many steps you want to go back - this is for Window PC users, I am presently unfamiliar with Mac’s.
Now, carefully (bit-by-bit) left-click and stretch a lasso line around the contours of each Coloured Orb or the Union Flag.
 
After you have completed a full circuit; pass your curser over the point where you started it - then left-click. The lasso line will immediately change to a selection marquee - as shown below.
 
Coloured Orbs - important!
After you have isolated the first orb, isolate the second then the third.
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After you have isolated (masked) the subject - or subjects, that are retaining their colour; from the top menu, choose Select then choose Inverse. The marquee will then isolate the subject (s) and the outside of the image - illustrated below.
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Now, from the top menu, choose Image then choose Adjustments then choose Desaturate. Then press Ctrl then D to remove the marquee. The selection marquee (s) have protected the isolated areas, and the areas outside them have been converted to monochrome.
Alternative desaturation filters and commands
Alternative to the Desaturate filter is the Channel Mixer. Additionally, CS3 users can utilise its Black and White filter. Or perhaps utilise a Black and White Gradient Map.
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Activate the Blur Tool, and set a very low Opacity, and very carefully, soften any harsh areas caused by the selection marquee.
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Congratulations you have successfully colour popped your photograph, to finish, link Here to save your work.
Wendi E. M. Scarth. Top of Page - Home.
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