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Animated Plane Flying Through Clouds - viewed 122,256 times

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Introduction

This Photoshop tutorial explains how to place a plane in some clouds and how to create the illusion of depth. Later in this tutorial we're going to use this plane to create a short animation in ImageReady.

1. Add plane and create the proper mask

This is the image that we're going to use in this tutorial:

Clouds

You can save this image by click right clicking on it and selecting (in Windows that is) Save Image/Picture As...

Open the image in Photoshop.

Open the channels palette. Since we're working in RGB, we will see three channels; (R)ed , (G)reen and (B)lue. Notice when you click on the red channel that it has a lot of contrast between the sky and the clouds. This means that this channel is a great candidate to be used as a mask later on (you'll figure out soon what I mean).

So with the red channel active (click on it once), go to the menu and choose Select / All (shortcut Ctrl + A or Command + A on the Mac). Continue by choosing in the menu Edit / Copy (shortcut Ctrl + C or Command + C on the Mac). This will place the content of our red channel on the clipboard. Needless to say that after you've done this you shouldn't copy anything else to this same clipboard or you will lose its content.

Red Channel Selected

 

Remove the selection that's still active by selecting in the menu Select / Deselect or use the shortcut Ctrl + D (Command + D on the Mac).
Click on the RGB layer in the channels palette (A) and then on the layers palette tab (B) and the original image will reappear in the document window:

Layers Palette

 

We're going to add the image of an airplane, one that you can download here (right click on it and select Save Target/Link As...).

Open this file that contains the airplane, select the Move tool Move Toolin the tool bar, click on the image of the plane, hold down the mouse button, drag the image to our file with the clouds and release the mouse button.

Click on the Add a layer mask icon Add Layer Maskin the layers palette to add a layer mask.
Hold down the Alt Key (Option key on the Mac) and click on the mask (A) in the layers palette:

Layers Palette

This will open the layer mask in the document window, which will now be completely white. Continue by selecting in the menu Edit / Paste (shortcut Ctrl + V or Command + V on the Mac) to paste the content of the clipboard (the copy of the red channel) on our mask.

Remove the current selection by pressing Ctrl + D (Command + D on the Mac)

Invert this mask by selecting Image / Adjustments / Invert (faster is to use the shortcut Ctrl + i or Command + i on the Mac):

Layers Palette

Please remember this; the color black in a layer mask means ignore. Notice that by inverting the clouds we have made them black and since black means ignore, it means that in those areas parts of the plane won't show up and that's exactly what we want, because it creates the illusion as if the plane is behind the clouds.

However, to make our mask more useful, we need to increase its contrast; make sure that the mask is still active (it will have a double border) and select in the menu Image / Adjustments / Levels...

Enter the value 70 (A) for the black slider, enter a value 160 (B) for the white slider and click OK:

Levels

Layers Palette

At the moment this mask is linked to the plane layer (notice the link icon Linkbetween the mask and the plane layer), which means if one of them is moved, the other one will also move. Because we want to be able to position the plane without moving the mask we have to remove this link, so click once on the link icon Linkto remove the link; the icon will disappear (A in next screenshot ).
Click once on the plane layer in the layers palette to make the plane layer the active layer; it will now have a double border (B):

Layers Palette

2. Add the illusion of depth

Go to the tool bar and select the Move tool Move Tool (if it's not selected). You can now use the mouse to move the plane in any direction. Notice when you do this, that the attached mask will stay in the same position since we've removed the link icon.

Important: always make sure that the layer with the plane is active (its thumbnail will have a double border in the layers palette) and not its mask. The mask should never be moved at any time. If you move the mask by accident, just press Ctrl + Z (Command + Z on the Mac) to undo the move.

Also notice when you move the plane that it will always disappear behind those clouds that are close to pure white. However to create the illusion of depth it would be nice to have the plane sometimes appear in front of these bright white clouds (from the viewer's perspective). My tutorial shows you how to do this in a pretty simple way.

Select the brush tool Brush Toolin the tool bar.

Open the brush picker window in the option bar by clicking on the button with the little triangle marked with A.
Select a round brush, select a Master Diameter(B) of 20, a Hardness (C) of 0% and an Opacity (D) of 100%.
Click again on the button marked with A when you're done to close this window:

Brush Options

Now let's make the plane invisible for now by changing the Fill value of this layer to 0% (A in our next screenshot)

Click on the mask in the layers palette to make it active (it will now have a double border (B in next screenshot )).

Continue by pressing the \  key on your keyboard, which will change the mask into the equivalent of quick mask mode (the clouds are now a light red).

Note: Instead of using the \  key, you can also hold down the Alt+Shift keys (Option+Shift on the Mac) and click on the mask in the layers palette instead.

Change the foreground color to black by pressing the letter D on your keyboard. Foreground Color White
Press the letter X on your keyboard to switch the foreground color to white (check this): Foreground color white

Now paint on those clouds (or part of it) that you want to appear behind the plane (again, from the viewer's perspective). Change the opacity of the brush in the option bar to a lower value (something like 30%) if you feel the need to have a softer transition between the areas that you paint on and the ones you leave alone. So in this screenshot the white clouds will appear behind the plane:

Depth Mask

 

When you're done, press the \  key on your keyboard to leave the quick mask mode.

Return to the layers palette and change the fill (A) value of the layer with our plane back to 100% and click on the thumbnail of the plane layer to make it active (it will now have a double border (B)):

Layers Palette

 

You can now grab the move tool Move Tool and move your plane around to see how your adjusted mask has corrected the depth in your image.

In the following image some of the clouds were moved behind the plane. Move your mouse over the next screenshot to see how the image looked like before the correction took place:

RollOver

Clouds with Depth

 

Save your current file by selecting in the menu File / Save and name it clouds.

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