Color Efex Pro 4 by NIK software is a plugin that provides an excellent set of enhancements for color correction, retouching, and creative effects. The plug in works with Adobe Photoshop, Photoshop Elements, Lightroom and Apple Aperture. Color Efex Pro 4 is available in Complete edition with 55 filters, or Select edition with 26 filters.
The interface is pretty simple, yet very intuitive. On the left side is the Filter / Recipe panel and on the right is the adjustment panel, both of which can be toggled with the Tab key. Once the image is “exported” from Photoshop/Lightroom/Aperture the default filter is applied – Professional Contrast.
Applying a filter to your image is fairly simple, select the filter from the list and it’s immediately applied to the image. You can preview the image in three ways; single image view (after), split preview with slider and side by side view (which can be viewed either side by side or above and below).
Once the filter is applied you can make your own adjustments in the adjustment panel on the right. Each filter has different options, ranging from the intensity, tonal range, area, shape, to the filter opacity.