Correcting Image Distortion
Hello.
In today's tutorial, we will cover how to correct image distorion. Photoshop CS2 has some excellent, powerful tools to help with these problems, and I will cover them in detail. We will learn how to straighten the horizon, correct Pincushion and Barrel distortion, a couple of ways to modify perspective (correcting the illusion of buildings leaning back from shooting up at them), and finally, removing Vignetting.
These tools, once learned, are quite easy to use. While they aren't as prominently featured in Photoshop as other features like Levels, Contrast, and Saturation, they can be just as essential in creating amazing images. Let's begin!
The horizon in this shot is obviously not level. The best solution to this would be to reshoot the image, this time with the horizon straight (some tripods come with levels; you can get bubble levels that fit on the hotshoe of cameras; and many Nikon cameras have on-demand grid lines in the viewfinder that help with achieving a level horizon).
Short of that, however, there's an easy fix in Photoshop. With the image open, select the Measure Tool from the Tools Pallet (Window > Tools), shown below. It is hidden under the eyedropper tool. You can also access the Measure Tool by pressing Shift + I repeatedly, cycling through the tools under that keyboard shortcut until the Measure tool is selected.
Click to continue reading "Correcting Image Distortion"
In today's tutorial, we will cover how to correct image distorion. Photoshop CS2 has some excellent, powerful tools to help with these problems, and I will cover them in detail. We will learn how to straighten the horizon, correct Pincushion and Barrel distortion, a couple of ways to modify perspective (correcting the illusion of buildings leaning back from shooting up at them), and finally, removing Vignetting.
These tools, once learned, are quite easy to use. While they aren't as prominently featured in Photoshop as other features like Levels, Contrast, and Saturation, they can be just as essential in creating amazing images. Let's begin!
Straightening the Horizon
The horizon in this shot is obviously not level. The best solution to this would be to reshoot the image, this time with the horizon straight (some tripods come with levels; you can get bubble levels that fit on the hotshoe of cameras; and many Nikon cameras have on-demand grid lines in the viewfinder that help with achieving a level horizon).
Short of that, however, there's an easy fix in Photoshop. With the image open, select the Measure Tool from the Tools Pallet (Window > Tools), shown below. It is hidden under the eyedropper tool. You can also access the Measure Tool by pressing Shift + I repeatedly, cycling through the tools under that keyboard shortcut until the Measure tool is selected.
Written by admin on December 22nd, 2006 with no comments.
Read more articles on Straighten Horizon and Perspective and Photoshop CS2 and Camera Review.
