Hello Linux Geeksters. As you may know, LightZone is a free image editing program, similar to DarkTable, and a good alternative for Adobe Lightroom, which is proprietary software. It has support for the most popular image formats, RAW included and may be a good choice.
The latest version available is LightZone 4.0, which has been recently released.
In this article I will show you how to install LightZone on Ubuntu 13.04 Raring Ringtail, Ubuntu 12.10 Quantal Quetzal, Ubuntu 12.04 Precise Pangolin, Linux Mint 15 Olivia, Linux Mint 14 Nadia and Linux Mint 13 Maya.
There is a PPA only for LightZone 3.9, but LightZone 4.0 should be also added soon to the PPA. To install it, just do:
$ sudo add-apt-repository ppa:arctica0316/ppa
$ sudo apt-get update
$ sudo apt-get install lightzone