With the launch of Lightroom 4, Adobe formally introduced a new version of the raw processing engine that powers both Lightroom and Photoshop's Adobe Camera Raw (ACR) 7 plug-in. Known as Process Version (PV) 2012, it represents quite a radical shake up in the way you can now process your Raw (and non-Raw) images.
Adobe has offered several reasons for this change. With earlier process versions - PV 2003 and PV 2010 - there was a degree of overlap between some of the Basic panel tone controls, not to mention confusion among users as to the most effective slider combinations.
In addition, the default tone settings differed for Raw and non-Raw images. Different amounts of adjustments were therefore required depending on whether you were editing a Raw image or a JPEG for example, making it problematic to share settings between the two file types. So on one level PV 2012 is an attempt to make tonal adjustments more straightforward and intuitive to perform.
Above all though, the range of control when editing raw images was becoming somewhat limited by what the PV 2010 (and earlier) adjustment sliders would allow. The sensor performance of today's mirrorless and DSLR cameras make it possible to effectively extract a more extended dynamic range. The thing is, you need the raw processing tools to keep up with these developments. PV 2012 is Adobe's effort to do just that. In this article, we'll compare some of the raw file editing capabilities of PV 2012 against its predecessor, PV 2010.
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