Apr 18, 2011 - Call Box Inc announces the release of Panasonic GH2 Guidebook. Created by Apple Certified Pro instructor Noah Kadner, this course takes users through the usage of the GH2 camera in production and post-production. The course focuses on the use of the DSLR camera as a filmmaking tool. The course features content broken down into learning modules with interactive demonstrations and easy to understand, real-world examples. The course focuses on the use of the DSLR camera as a filmmaking tool.