Adobe's Lightroom 4 beta is out, and among it's other enhancements, it features a new lossy compression scheme for DNG images. LR has always has lossless compression, which could usually reduce image size by up to half. However, it's not been used much, except when you used any of Adobe Camera Raw, Lightroom or the Adobe DNG converter to convert an existing raw image to DNG. The lossless compression scheme hasn't, so far as a I know, ever been used in-camera, presumably because it's quite CPU intensive.

Eric Chan was kind enough to give some details on the new lossy scheme, which I'll summarize here, together with my views. You can read the full exchange on the Adobe forums in this thread.

NOTE: This post is based on Eric's comments - the specification isn't yet available.
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So I decided to change to Mint from Ubuntu for my (fairly minimal) Linux needs because I haven't managed to get used to Unity. It may look cool, but it's a pain to use.

The good news is that installation was easy; none of the issues I had last time I installed Ubuntu. Other than of course the usual Gigabyte motherboard won't boot from USB issue I described (with the solution) in a previous post.
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