The Sony HDVF-20A ("A" version adds 24p support) is a 2.0" HD viewfinder for the HDCAM series of professional camcorders. The advent of high definition requires a more sophisticated viewfinder. The extra resolution provided with this unit guarantees the camera operator ample detail when attempting to discern focus.

Both the HDVF-20 and the 20A support 1080 & 720, while the "A" adds 24p support.