A little more than a year ago Panasonics video dslr the GH1 was hacked. It was an amazing breakthrough that made a barely useful hdslr a real 5D competitor. Many people claimed the hacked GH1 would even outmatch the 5D mark ii in terms of picture quality.
The GH2 was released in October 2010 as a successor to the GH1 and has some very convincing advantages in terms of image quality over Canon’s lineup. Compared to the 60D and 7D, the GH2 has virtually no moire, less rolling shutter and even delivers a sharper picture in some occasions.