Panasonic on Thursday announced more details regarding its Lumix DMC-G1 digital camera, first introduced last month. The Lumix G1 is the world's first Micro Four Thirds System camera, meaning it offers interchangeable lenses and certain functions that are similar to digital SLR cameras. The electronics maker revealed the camera will cost nearly $800 bundled with a 14-45mm Lumix G Vario lens when i