Canon PowerShot G3 X Digital Photo Professional Ver.4.2 for Windows Instructio - Page 72

Making Corrections You can make corrections to any of the four aberrations as below, either one at a time or simultaneously.  Peripheral illumination  Chromatic aberration (color fringing which occurs in the periphery of an image)  Color blur (blue or red color blur which sometimes occurs at the edge of the highlighted area of an image)  Distortions 1 Select an image in the main window. 2 Display the Lens Correction tool palette and checkmark the items to be corrected. Enlargement display section  The image is corrected and redisplayed.  In the main window, the [ ] mark is displayed on the image to indicate that the lens aberration correction is applied (p.130).  Check the results of corrections to peripheral illumination or distortions in the full view.  Check the results of corrections to chromatic aberration and color blur by clicking the area on the image you want to check and then checking the enlargement display section in the top of the window. You can choose from 4 display scales between 1:1 and 1:4 for the enlargement display.  You can lessen the degree of correction by moving the slider to the left.  You can respectively correct red chromatic aberration with the [R] slider of the [Chromatic aberration] or blue chromatic aberration with the [B] slider.  To correct distortion aberration of images shot with a fisheye lens (EF 8-15mm f/4L USM Fisheye or EF 15mm f/2.8 Fisheye), four effects can be selected from the [Effect] list box in addition to [Shot settings] normally used for distortion correction. The level of an effect can be adjusted with the adjustment slider located below [Distortion]. For detailed information on each effect, see "Effects of Distortion Aberration Correction for Fisheye Lenses" (p.72).  For images shot with EF 8-15mm f/4L USM Fisheye, a fine-tune slider is also displayed when you select [Emphasize Linearity] from the [Effect] list box. Adjust the amount of correction for distortion aberration with the adjustment slider, and then adjust with the fine-tune slider if more adjustment is required.  When the list box for selecting an extender is displayed, select the extender attached at the time of shooting from the list box. Introduction Contents 1 Downloading Images 2Viewing Images 3Sorting Images 4Editing Images 5Printing Images 6 Processing Large Numbers of RAW Images 7Remote Shooting 8 Specifying Preferences Reference/ Index 71