Digital SLR cameras deliver high quality photos, but to the most critical of photo enthusiasts, nothing is more annoying than chromatic lens aberration. Lens aberration is best described as an unwanted halo of color that wraps around certain objects in photographs. Aberration is caused by flaws in lens glass, and more expensive lenses do a better job of covering up the problem; however, aberration can still appear in the most expensively produced pictures. Photoshop provides users with the tools needed to minimize aberration.
Instructions
1. Open a photo with lens aberration in Photoshop CS4.
2. Click the "Filter" menu at the top of the screen and select "Distort." Find the "Lens Correction" option from the menu. A grid will appear over the menu along with several adjustment sliders.
3. Tweak the slider labeled "Remove Distortion" until the edges of the photo are straightened. There may be little to no distortion, but it is best to adjust this slider to see if the edges of the picture can become more visually pleasing.
4. Remove reddish aberration by adjust the slider labeled "Fix Red/Cyan Fringe." Look closely at the detail screen to the right of the image to see if the aberration is diminishing.
5. Remove the blue and yellow aberration by adjusting the slider labeled "Fix Blue/ Yellow Fringe." Look close again at the detail screen as you move the slider to make sure the aberration disappears.
6. Save the photo to make the changes permanent. Select "Save As" under "File" and rename the file before saving to preserve an original copy of the image.
Tags: slider labeled, detail screen, Fringe Look, lens aberration