Using ACR to correct the aberration problem of lenses

Have you ever had a large, purple-edged picture of your lens? In fact, you only need to use the PS of Adobe Camera Raw in the lens correction function, a few steps to improve these problems, so that "dog head not dog."

Common wide-angle zoom lens to take photos, the edge of the screen should be straight lines because of distortion and bending, white frame with purple edge, and because of the careless filming, the picture has a little skew. These are all very common problems.

Standard zoom lenses, especially high-power zoom lenses often bear such notoriety, in the wide-angle end prone to barrel-shaped distortion, and to the Char and long focal lengths can easily produce pillow-shaped distortion. The ultra wide-angle zoom lens is also more prone to barrel distortion, but this is entirely expected.

The telephoto zoom lens is relatively less susceptible to distortion. Some SLR camera menus provide an option to automatically calibrate the distortion, but only when the image quality is set to JPEG.

When you shoot with the raw format, the image file is marked with the necessary adjustments and stored in the raw file. These settings are automatically invoked when the raw file is processed later, if you have to use the camera manufacturer's own software. In addition, these automatic tuning features are usually only available for lenses produced by the camera manufacturer themselves.

There is another option, which is to take the raw format and then distort the distortion when converting the computer to a JPEG file on the camera by replaying the options in the menu. For greater versatility, especially when you use an independent manufacturer, such as a suitable horse, dragon or Polaroid production lens, it is best to use the Adobe Camera Raw plugin provided by the new version of Photoshop, which supports the intelligent Distortion correction feature. But for the Photoshop Elements that streamlines the camera raw plug-in, you can't directly process raw files.

Here are 3 steps you can take to learn how to perform distortion, dispersion, and level correction in PhotoshopCS6.

　　1 Select Presets

Click on the lens selection button of Photoshop's camera raw plugin, then click on the preset list. Shanga the preset correction file, the distortion and fade can be corrected automatically.

　　2 Eliminate chromatic aberration

To remove the purple or green edges from the photo, select the Color tab and check the "eliminate chromatic aberration" box. Zoom in on the edges of the high Contrast area in the screen and the corner area, and then adjust the slider.

　　3 Manual Adjustment

Under the Manual tab, you can set the correction for distortion and fading, and also include a correction to the vertical and horizontal perspective, which can simulate the effect of using a moving axis lens to some extent.

After the revised Photo:

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