With the emergence of the HDV format and its 1/3" lens mount, the requirement for 1/3" to 2/3" lens mount adaptors has developed. Cameras such as the HVR-S270E, HVR-Z7E and PMW-EX3 have a 1/3" interchangeable lens system. You can use your existing 2/3" lenses with a lens adapter.
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Lens mount adapters enable the conversion of one mounting type or manufacture to another. For example, Sony B4 mount to JVC 1/3". They are available from 1/3" to 1/2" Bayonet, 1/3" to 2/3" Bayonet, 1/2" to 1/3" Bayonet, ½" to 2/3" Bayonet. In addition, with the latest cine-style adapters prime lenses can also be used with an existing video camera.
Lens Adapters
Typically, the mount size of a lens relates to the size of the Camera CCD. Lens adapters provide the flexibility of lens inter-changeability therefore enabling the expansion of creative production options.