Tachyon
Tachyon ("Tak-ee-on," a faster-than-light particle) inverts the the bright and dark areas of your picture, but does not change the hues. Ordinary inversion would change blue to yellow, for example.
ChromaSolarize
ChromaSolarize combines the Tachyon effect with solarization, producing attractive surreal effects.
Anaglyph Flip
Exchanges the left-eye and right-eye channels in red/cyan anaglyphic 3D pictures.
Swap Red & Blue
Swap Red & Green
Swap Green & Blue
These filters work on RGB images ? those with three channels of color: red, green, and blue. By swapping data between channels, they transform color, changing the picture?s chromatic harmonies in useful ways.
RGB->HSL and HSL->RGB
RGB->HSL takess a normal image with its red, green, and blue color channels and replaces these with hue, saturation, and luminance respectively. Your paint program will think the image is still in RGB form, so the colors will look bizarre. HSL->RGB changes the image back.
The HSL color system is a way of representing colors. Hue is the property of a color that classifies it as red, yellow, blue or green, or a blend of these. Saturation is the vividness of the color; and luminance is the total amount of light it throws off.
If you use these filters and your paint program lets you paint into individual color channels, you can change the image in a way difficult to do in RGB mode.
Try using RGB->HSL, then Gaussian Blur, then HSL->RGB.
Vitriol
Vitriol changes colors? contrast as if viewed through colored glass, but without tinting the image.
Imagine you want to use black-and-white film to take a spooky picture of a landscape. You could make the sky unnaturally dark by placing a yellow glass filter over the lens; this will make the blue sky very dark, while the appearance of the green landscape is affected very little.
It would be fun to do the same effect in color, but the yellow filter would of course make the picture yellowish. Vitriol will get the contrast effect without the colorization. Just set the foreground color to the color of the imaginary colored glass, and choose Vitriol from the Filter menu.
Vitriol automatically provides density correction, so you can use a strongly colored filter without making your picture go dark. The effect is most vivid on areas of strongly saturated color. Apply repeatedly to intensify the result.
Kyoto Color
Kyoto Color changes color using a Hue/Luminance/Saturation color space, but it's not the same HLS color space built into Photoshop. The Kyoto space produces more lifelike results for massive hue changes.
Make Cube Tile
Make Cube Tile takes a square image and modifies it so that six tiles can seamlessly cover a sphere. Flexify can use these tiles as input.
Ornament
Ornament takes a photo of a mirrored ball and unwraps the reflection into a form called an "equirectangular panorama."
It has its own separate guide.
The next filters only operate on layers with a transparency channel.
Solidify A & B
Solidify turns an image layer entirely 100% opaque. It reveals partially transparent areas, and can even help repair the corrupted transparency channel that some paint programs occasionally produce. It's also good for quickly filling in missing regions of a panorama.
Solidify A softly blurs the solid part into the transparent region. Solidify B smears only the outer edge for a harder look.
In this example, the strawberry was in a different layer than the background.
Ghost
Ghost turns an image layer into a semitransparent picture made entirely of black pixels. It produces a smoked-glass effect that's hard to produce by hand.
In this example, the strawberry was in a different layer than the background.
AntiGhost
AntiGhost turns the alpha channel into solid greys.
TransLine and TransTone
TransLine makes every second scanline transparent. TransTone is similar, but turns a 50% pattern of pixels transparent. This can be a useful effect if you are making transparent GIFs for the web.
In this example, the strawberry was in a different layer than the background