The sunburst, too, was added afterward with a few clicks of a computer mouse. Camera manufacturers, including Canon, Nikon, Minolta, Olympus and Pentax, also offer a range of filters. Today, traditional filters are still popular. But filter use is no longer limited to the camera lens. Many of the effects created by traditional creative and correction filters, plus new innovative creative filters, can be used to enhance pictures at home in the comfort of the digital darkroom.
Digital filters are available in what's called a plug-in for a digital imaging program.
After installation in a digital enhancement program, they are plugged-into and become a functional part of it. Once installed, a plug-in allows the program to accomplish something it couldn't normally do. Paint Shop Pro. Here is a look at just a few of the plug-ins for digital imaging programs. Effects include adding motion streaks, flames, smoke, shadows and even a melting effect to objects in a scene.