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Fixing chromatic abberation and white balance issues


From:

Lightroom 4 New Features

with Chris Orwig

Video: Fixing chromatic abberation and white balance issues

Here I want to highlight two new features in the Lightroom 4. One of them has to do with working with chromatic aberrations; the other one has to do with white balance. Now let's start off with the chromatic aberrations. In the previous versions of Lightroom, I use this image as a demo file. What I want to talk about is it when you shoot with a wide-angle lens, a lot of times on the edges, you'll see chromatic aberration. Now if we zoom in, what we'll see is that we have this fringing. There's a red color and then a cyan color along the edge of these branches.
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Watch the Online Video Course Lightroom 4 New Features
1h 58m Intermediate Mar 06, 2012

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This course covers the newest features and enhancements in Photoshop Lightroom 4, the popular photo-asset management, enhancement, and publishing program. Author and photographer Chris Orwig details the new video editing and sharing capabilities in Lightroom; its new book-layout features for creating Blurb photo books; the new Map module, to tag images with locations; and the various image editing improvements in the Develop module. Exercise files are included with the course.

Topics include:
  • Editing the color and tonality of video
  • Trimming a video for length and content
  • Sharing video on Flickr and Facebook
  • Creating and customizing a book layout
  • Geotagging and creating saved mapping locations
  • Working with the Clarity image adjustment
  • Making RGB tone curve adjustments to images
  • Fixing chromatic aberration and white balance
  • Utilizing improvements in Fast Load and Lossy DNG
Subject:
Photography
Software:
Lightroom
Author:
Chris Orwig

Fixing chromatic abberation and white balance issues

Here I want to highlight two new features in the Lightroom 4. One of them has to do with working with chromatic aberrations; the other one has to do with white balance. Now let's start off with the chromatic aberrations. In the previous versions of Lightroom, I use this image as a demo file. What I want to talk about is it when you shoot with a wide-angle lens, a lot of times on the edges, you'll see chromatic aberration. Now if we zoom in, what we'll see is that we have this fringing. There's a red color and then a cyan color along the edge of these branches.

Well, previously there were controls or sliders to try to remove this discoloration or this chromatic aberration. Well, now all that you have to do is go to the Lens Corrections panel. There's a new solution and all that it requires is to click on this button here, and voila, it's taken care of. So there really isn't anything to teach here, just to highlight that there's this new feature, and it really makes this process much more simple and it gets rid of this fringing in a great way. Well, let's look at the next new feature I want to highlight that has to do with color sampling.

A lot of time what we'll do is shoot an image perhaps with a color checker chart, or we'll click on something which is white in order to make sure we don't have a color cast. So here if we go to the Basic panel, we can use the Eyedropper tool, and you can hover over an area in your image. In this case, let's say, one of these little color chips, and if you have a three-button mouse, you can scroll in order to change the zoom rate of that particular area and then click to sample. The other thing that I want to highlight here is that what you can also do with this tool is that now the white balance sampling is zoom dependent.

In other words, it will change how it's sampling based on how far you've zoomed in or zoomed out. It works more effectively, and it doesn't matter what your zoom level is when you're trying to color correct or white balance your images. Now if you don't have an image with the color checker chart like this one here, you can always use this tool as well and just hover over something that you think should be white, and again, by zooming in or zooming out, you can see that you can try to get to a real precise area or balance out an area of your photograph, and then click on that in order to color balance it, so that you've removed that color cast.

Here is the image with a color cast, and then here is it without that. Well, that wraps up our look at those two new features.

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