Added: Mar 10, 2005 Rating:Level: Beginner Software:
Photoshop
Two simple methods for inverting an image without changing the colours.
1. Open the image for editing.
2. Invert (Ctrl+I) the current layer. The image is now inverted but the colours were inverted as well.
3. To
change the colours back to their original colours, use the
Hue/Saturation tool (Ctrl+U) and set the Hue to either -180 or 180.
Both values will give the same effect.
4. This
is the result of inverting using the Invert and the Hue/Saturation
tool. Rollover the image in this step to see the original image before
this Photoshop technique was applied.
5. An
alternative to inverting using the Invert and Hue/Saturation tool would
be to invert just the Lightness of the image. Change the image mode to
Lab Color (Image> Mode> Lab Color). In the Channels pallet (Window> Channels), select the Lightness channel and Invert (Ctrl+I).
6. Inverting
the Lightness channel in Lab Color mode gives a slightly different
effect. Rollover the image in this step to see the original image
before this Photoshop technique was applied.