Create Films Sets In Photoshop
1.Getting started
I started with a sketch that I painted over a photo. I began by
replacing the sky, doing my sketch over several layers so I could place my new sky on top of my sketch and have the foreground elements overlap it. I like to work from back to front, dealing with one element of a sketch at a time.
2. Sky replacement
Using several photos, I extracted the sky from the image using Channels. In the Channels palette I selected the Blue Channel, which had the greatest contrast between the sky and the rest of the image. I duplicated this Channel by clicking and dragging it on top of the Create New Channel icon. With the duplicate channel selected, I typed Ctrl+M (PC) or Command+M
(Mac) to bring up the Curves palette and boost the lights and darks to create a strong silhouette. I cleaned up any stray specs using a hard edge brush, then held down Ctrl (PC) or Command (Mac) and right-clicked on the channel to create a selection. Next, by clicking Ctrl+J (PC) or Command+J (Mac) I extracted the sky from the photo. After combining several sky pieces, I dropped the resulting work into the scene, over my sketch.
3 Distant mountains
Using ‘distantMountains.psd’ on the DVD, I selected the Red Channel and duplicated it like I did in the last step. Using curves, I boosted the contrast, but not as much as I did for the sky extraction. By clicking and holding on the channel and then dragging it into my matte painting I had this new channel to use as a mask. On a new layer above my mountain sketch I added a light colour, sampled from the sky with the Eyedropper tool, and a soft brush. I painted in the highlights of the mountain. The Channel wasn’t exactly the same size as the mountains so I moved the mask around to work on different parts of the mountain.
4.Ground plane
I used the Lasso tool to extract some trees from a photo, for the area beyond the ridge. I used the Layer Mask again to soften the edges. To add the river, I sampled a light colour from the sky and with a standard chalk brush painted it in, on a new layer. Finally,on a new layer with a soft airbrush and the same light sky colour, I painted a soft haze along the base of my mountains to blend the ground plane and the mountains.
5.Rocky mountains
For the larger mountains I began by gathering bits and pieces of tree cover from several photos. I looked for similarland shapes to my sketch. I used my ground plane as a scale reference. Using the Eraser tool I cleaned up my edges to fit over the sketched mountain. For the rocky portions I used the same process but was careful to watch the scale of the rock texture so it was appropriate for the size and distance of the mountain.
6. Re-lighting
The mountains looked flat, so I needed to re-light them. First I duplicated my tree layer: one layer for shadows and the other for light. The shadow layer went underneath. Starting with the shadow layer I applied a colour overlay that was accessed by double-clicking the layer. I chose a dark colour from the sky and brought the transparency of the overlay down until it matched the colour of the shadowy parts of my ground plane. I used curves to reduce the contrast.
Source: www.imaginefx.com
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