Adobe Photoshop Lightroom 2.6.1 is in other respects said to be unchanged from the recently published Lightroom 2.6 release, which added support for a variety of cameras from Canon, Leaf, Mamiya, Nikon, Olympus, Panasonic, Pentax, Sigma and Sony as well as fixing a processing issue on PowerPC-based Mac OS machines. For that reason, only Leica M9 users are being recommended to upgrade to Lightroom 2.6.1

The bug which caused crashes when processing Leica M9 images is said to have been introduced in the final release of Lightroom 2.6, as Adobe was making changes to improve image quality based on customer feedback. Lightroom 2.6.1 is available for both Windows and Mac OS operating systems.