Correct Image Perspective and Lens Flaws Using Lens Correction Profiles

Lens Correction,  this is one of the new features of Adobe Photoshop Lightroom  3.0 that I really, really like . It gives photographers the ability to quickly and easily perfect images by automatically reducing lens defects like geometric distortion, chromatic aberration, and vignetting with single-click profiles. Even images from the best lenses will be improved.

The Profile options in the Lens Corrections panel of the Develop module correct distortions in common camera lenses. The profiles are based on Exif metadata that identifies the camera and lens that captured the photo, and the profiles compensate accordingly.

Lens profiles are saved in the following locations:

Mac OS
/Library/Application Support/Adobe/CameraRaw/LensProfiles/1.0/

Windows XP

C:\Documents and Settings\All Users\Application Data\Adobe\CameraRaw\LensProfiles\1.0\

Windows Vista or Windows 7

C:\ProgramData\Adobe\CameraRaw\LensProfiles\1.0\

Important: The lens profiles that are available in the Lens Corrections panel depend on whether you’re adjusting a raw or a non-raw file. For more information and a list of supported lenses, see the Adobe Support article Lens profile support | Lightroom 3, Photoshop CS5, Camera Raw 6 (cpsid_84666).

  1. In the Lens Corrections panel of the Develop module, click Profile and select Enable Profile Corrections.
  2. To change the profile, select a different Make, Model, or Profile.
    Note: Some cameras have only one lens, and some lenses have only one profile.
  3. Customize the correction by adjusting the Amount sliders:
    Distortion
    The default value 100 applies 100% of the distortion correction in the profile. Values over 100 apply greater correction to the distortion; values under 100 apply less correction to the distortion.

     

    C. Aberration
    (Chromatic Aberration) The default value 100 applies 100% of the chromatic aberration correction in the profile. Values over 100 apply greater correction to color fringing; values under 100 apply less correction to color fringing.

     

    Vignetting
    The default value 100 applies 100% of the vignetting correction in the profile. Values over 100 apply greater correction to vignetting; values under 100 apply less correction to vignetting.

     

  4. (Optional) To apply your changes to the default profile, click Setup and choose Save New Lens Profile Defaults.

To learn more about making lens corrections in Lightroom, see these tutorials:

Lens profile support | Lightroom 3, Photoshop CS5, Camera Raw 6

(Source : Adobe.Com)

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