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raw-vs-dng-practical-overview-of-differences Post Production Tips

RAW vs. DNG – A Practical Overview of the Differences in Lightroom 3

By Pye Jirsa on May 12th 2011

(The Lightroom video tutorial in this post is just under the introductory text below. The working files for this video can be found in any of the articles within the Creating Catalogs and Importing Chapter)

XMP Files are extremely useful. Because RAW files are so large, it is rather cumbersome transferring them back and forth between computers, or individuals. While RAW images can be anywhere from 10 – 30 Megabytes, XMP files are only around 10 Kilobytes. So, they are extremely easy to share and transfer.

So, if two computers or individuals have all the same RAW files, then develop settings can be passed back and forth by simply sharing the XMP Sidecar Files.

In this video, we are going to talk through some of these practical uses for XMP, as well as show you how to save and pass them back and forth so that you can know how to use XMP Sidecar Files whenever it is necessary to aid your workflow.


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Post Production Pye
SLR Lounge Senior Editor
Partner ofLin and Jirsa Photography

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Q&A Discussions

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  1. Joseph Prusa

    Nice tutorial

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    many thanks for the excellent tutorials. one quick comment. i found saving to DNG producing a smaller file than the original RAW file. is that not a good enough reason to completely replace the RAW files? 

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  3. NY photographer

    Nice tutorial. I’ve done away with sidecar files from my workflow, just thought it was too cumbersome. But I can imagine now how it might be utilized.

    By the way, I’m enjoying the development on the site. Been following you guys for nearly a year now :)

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    • Pye

      Thanks a bunch NY Photographer!

      We have been working hard on the site. The goal is to gather enough readers where we can simply provide free “paid quality” tutorials and other inexpensive resources to photographers. We are getting there, but we still have a lot of room to grow.

      So, we always greatly appreciate it when fellow togs spread the FB/Twitter love about SLR Lounge.

      Hopefully, soon we can get to the point where we can dedicate an entire team to creating free tutorials and resources full time =)

      — Post Production Pye

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