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<essay xml:lang="en" version="5.0" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:gal="http://norman.walsh.name/rdf/gallery#" xmlns:foaf="http://xmlns.com/foaf/0.1/">
<info>
    
    
    
    
    
    
    
    
    
    
<title>Lightroom 2.0 Beta</title><biblioid class="uri">http://norman.walsh.name/2008/04/05/lightroom2</biblioid>
<volumenum>11</volumenum>
<issuenum>35</issuenum>
<pubdate>2008-04-05T15:24:22-04:00</pubdate>
<author>
      <personname>
<firstname>Norman</firstname>
	<surname>Walsh</surname>
</personname>
    </author>
<copyright>
      <year>2008</year>
      <holder>Norman Walsh</holder>
    </copyright>
<abstract>
<para>A quick peek at my most wanted Lightroom feature: localized
corrections.</para>
</abstract>
<dc:subject rdf:resource="http://norman.walsh.name/knows/taxonomy#Lightroom"/>
<dc:subject rdf:resource="http://norman.walsh.name/knows/taxonomy#Photography"/>
</info>

<para xml:id="p1">Since I got my Mac, I've been using
<wikipedia page="Adobe_Photoshop_Lightroom">Lightroom</wikipedia> to
manage my collection of digital photographs.</para>

<para xml:id="p2">Lightroom does everything that I do routinely: crop, adjust
exposure, adjust colors, adjust sharpness, occasional blemish removal,
and manage image metadata. And it does so excellently.
</para>

<para xml:id="p3">There are two problems that most often make me resort to
<wikipedia>GIMP</wikipedia>: significant editing (usually removing
objects I wish hadn't been there) and exposure masking.</para>

<para xml:id="p4">Consider an image like this one (not really a very good image,
but illustrative of this point):</para>

<mediaobject role="flickr">
    <!--Sea and sky before-->
  <imageobject xlink:href="http://www.flickr.com/photos/ndw/2390611368/">
    <imagedata fileref="http://farm4.static.flickr.com/3228/2390611368_98913d19c5.jpg"/>
  </imageobject>
</mediaobject>

<para xml:id="p5">The sky has some nice bright spots, but the sea is too dark.
Doing a “global” exposure adjustment to bring out shadow detail
blows out the sky:</para>

<mediaobject role="flickr">
    <!--Sea and sky with blown highlights-->
  <imageobject xlink:href="http://www.flickr.com/photos/ndw/2389778397/">
    <imagedata fileref="http://farm3.static.flickr.com/2315/2389778397_a0cfc95c51.jpg"/>
  </imageobject>
</mediaobject>

<para xml:id="p6">I usually tackle this problem by loading the image in GIMP,
creating two layers, adjusting the exposure of the sea in one layer
and the sky in the other, then blending them together. It works, but
it's tedious. It also doesn't work by applying a (reversible) set of
changes to the (unmodified) original image as Lightroom does, it
changes the actual bits in ways that are difficult or impossible to
reverse.</para>

<para xml:id="p7">Enter
<link xlink:href="http://labs.adobe.com/technologies/lightroom/">Lightroom
2.0</link> with “localized corrections”. Localized corrections allow you
to “paint” with an exposure correction. In this image, I've adjusted the
exposure of the sea on the right hand side of the image, but not yet
the left, <emphasis>without</emphasis> effecting the sky:</para>

<mediaobject role="flickr">
    <!--Editing sea and sky with localized corrections-->
  <imageobject xlink:href="http://www.flickr.com/photos/ndw/2390611586/">
    <imagedata fileref="http://farm3.static.flickr.com/2340/2390611586_80a4c4e3ea.jpg"/>
  </imageobject>
</mediaobject>

<para xml:id="p8"><emphasis>Exactly</emphasis> what I needed. I don't really
consider myself competent to provide an in-depth review of Lightroom
2.0, but this feature alone is worth the price of admission.</para>

</essay>

