Render filters create effects concerning lighting. They coat the picture with a cloudy pattern, imitate refraction and reflection of light on an object, etc. Besides, this category also includes filters that imitation of volume of an object with the help of light.
1. Clouds
This filter doesn't have the settings window, but before applying it, you still have to select basic and background colors, as the filter uses them when putting the cloudy design over the picture. The pattern will include colors randomly selected from the range between the basic and background colors. If you press Alt when applying the filter, you'll get more contrastive clouds with sharper edges.
So, open the image. As the filter may hide the entire image, you should apply it only to selected areas. Using the Wand tool (W), select the area around the girl.
Go to Filter>Render and select Clouds. Here's what I got:
2. Difference Clouds
This filter does the same thing as the previous one, but mixes the new pixels with the old ones in the Difference mode. When you first apply the filter, you invert the image. If you apply the filter several times in a row, you'll get a marble-like pattern.
Just like the Clouds filter, this one will hide the entire image, you should apply it only to selected areas. Open the image you got in the previous conversion, and choose Filter>Render>Difference Clouds. Here's what you should get:
3. Fiber
This filter generates a pattern from background ? foreground color fibers. It uses colors randomly selected from the range between the main and the background colors.
As in the previous filters, the whole image my end up being hidden, so you should apply it only to selected areas. Open the image you got in the previous conversion, and choose Filter>Render>Fiber. Here's what you should get:
Variance - determines the number and variety of transitions in the pattern (I used 25).
Strength - influences the level to which the design is smeared (I used 1).
Randomize - this button generated other patterns using the current settings Variance and Strength.
This is my result:
4. Lens Flare
This filter imitates glares you can see on a picture of an object when bright light is reflected from the lens of your camera.
So, open the image and select Filter>Render>Lens Flare. You'll see the following settings:
You can indicate the exact spot of the glare by clicking the dagger in the right spot.
Brightness - lets you later the light intensity (I used 120%)
Lens type - determines the form of a glare letting you to chose between: 50-300mm Zoom, 35mm Prime, 105mm Prime, Movie Prime (I used 50-300mm Zoom).
5. Lightning Effects.
This filter allows imitating practically any lighting of an object: daylight, common and daylight lamps, floodlight, etc.
So, open the image and select Filter>Render>Lighting Effects. You'll find these settings there:
Click to enlarge
This filter has various and complicated settings:
Light type - choose the type of the light source and has the following variables: Spotlight, Omni, Directional (I used Spotlight).
You'll see the scheme of lighting in the preview window. There, you can change light direction, shape and size of the lit area.
When working with the light source Spotlight, you can make the following manipulations with the source. Ellipse radius is the direction of lighting while the point where it crosses the ellipse is the light source itself. Click at its end and turn the lighting in the necessary direction. By dragging the center of the ellipse, you'll drag the lit area into a different place keeping its original shape. By dragging the dots on the sides of the ellipse, you can widen or narrow the lighting area. If you drag the light source along the radius, you'll move it nearer to the object or further away from it.
Working with the Omni type, you can simply drag it to any spot lying outside of the circumference. To change the area's size, you just need to move any of the four dots on its circumference/ border.
When working with the Directional light source, you'll see a segment of a straight line. You can drag the entire object by the large dot or change its length and direction using the smaller dot. the If length of the segment is reduced, the lighting of the object increases.
Intensity - this crawler controls the lighting intensity (I used 34).
Focus - determines the focal distance of the floodlight (I used 53; this parameter appears only with spotlight light source).
On checkbox - switches on and off the active light source for the image.
Properties - here you can control the properties of the reflective or absorbing surface of the object.
Gloss - shows the texture of an object. If you move the crawler closer to Matte, a thin dark hem will appear on the edges. Moving the crawler toward Shiny will create light glares (I used 29).
Material - imitates the whole range of surfaces, from plastic to sparkling metal (I used 39).
Exposure - the higher the exposure, the brighter the glares on the surface of the object ( I used -5).
Ambience - additional highlighting, that lights everything including areas beyond the lit area (I used 10).
Texture Channel - applies a special half-tone texture to the lighting creating a feeling of volume. You can choose one of the color channels: Red, Green, Blue.
White is High - inverses the protuberances in relief.
Height - controls the level of relief for an object.
Lamp icon - lets you ad a light source to the picture. If you need additional light sources, just drag the lamp where you need in on the picture and change the lighting settings. To switch between the sources, just click the white spot (the center of the source).
Trash icon - lets you remove the light sources from the picture. To do this, just place the source into the trash bin.
You can also save your style of lighting by pressing the Save button under the style. Also, you can load one of the preset light sources.