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More materials by author Denny Tang

Rotating rectangular boxes with colours of the rainbow.
Editor's Pick in Photoshop Tutorials, March 2005
A geometric kaleido pattern with a liquified texture.
Create a feather with translucent fur.
Coverting an image to black and white usually means reducing the saturation or just using the red, green or blue channels. By using a channel mixer, you can specify how many of each channel you want in the black and white image.
Purple fringing is evident in photographs taken with a digital camera. Purple fringing creates purple outlines on areas of high acutance. Learn how to remove purple fringing by using an adjustment layer.
Photographs taken with most cell phone cameras are usually creates low contrast image. In this tutorial, you will learn how to quickly improve photographs taken with a cell phone camera.
Taking photos in the fog usually results in an underexposed, low contrast image. In this tutorial, you will learn how to use the levels and brightness/contrast tool to remove the fog and restore the details and colours in the photograph.
Photographs of fireworks usually look fantastic without any retouching. In this tutorial, you will learn how to increase the contrast and saturation of the fireworks without losing detail to create a better photograph.
Traditional red eye removal techniques only works for people with dark coloured eyes. In this tutorial, you will learn how to use a layer mask to remove red eyes for every eye colour.
Simulate the effects of the automatic white balance feature found in digital cameras.