Contains lighting information used by Poser, a 3D character modeling and animation program; may include lights, such as spotlights and distant lights; light set files created with Poser 6 and later may also contain point lights and image-based lights.
Program(s) that open lt2 files
Mac / Windows: Smith Micro Poser
Information from FileInfo.com - The File Extensions Resource.
http://www.fileinfo.com/extension/lt2
