Join David Mattingly for an in-depth discussion in this video Extracting the mountains, part of Digital Matte Painting: Changing a Scene From Summer to Winter.
Now it's time to deal with the background mountains.…We need to extract the mountains, for two reasons.…First, we're going to handle them in a different manner than the other elements…in the matte painting.…Second, we're going to add moving clouds later on in After Affects, so the…clouds need to be separated from the mountains.…Let's start by looking to our alpha channels and see which channel has the most…contrast between the mountains and the sky.…The red channel has the most contrast, but this is going to have to be…a two-step process.…
On the left side the mountains are nicely silhouetted against the white sky,…but on the right side, you can see that the mountains are light against a darker sky.…So we need to make two copies of this channel to apply different curves to…isolate different sections of the mountains.…I'm going to select the first copy of the red channel, then press Command+M on…the Mac and Ctrl+M on Windows to open up the Curves dialog.…Now I'll click into the white part of the sky with the Eyedropper tool and…
- Making precise selections using the Color Range command
- Controlling reference material through layer masks
- Creating custom brushes
- Painting snow, icicles, and trees
- Painting through a high-contrast matte
- Replacing the sky in an image
- Animating smoke and falling snow
- Reformatting and rendering a scene in After Effects
Skill Level Intermediate
Photoshop CS5: Landscape Photographywith Ben Long6h 42m Intermediate
Photoshop CS5: Painting with the Mixer Brushwith John Derry2h 26m Intermediate
Photoshop CS6 Essential Trainingwith Julieanne Kost10h 30m Beginner
After Effects CS6 Essential Trainingwith Ian Robinson8h 41m Beginner
1. Revising the Plate
2. Painting Over the Plate
3. Replacing the Sky
Extracting clouds5m 15s
4. Creating a Dusk Version of the Scene
5. Animating Your Scene in After Effects
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