B4 to Canon C300 Adaptor

Photograph of 'B4 to Canon C300 Adaptor'

Do you require shallow DoF and the huge zoom range offered by HJ B4 mount lenses on the same production?
You can increase the versitilty of the camera by being able to switch from the native EF or Nikon lenses to a Canon HJ11, 14 or 22 as your shoot requires. Manual operation or remote servo zoom when combined with a V-lock battery. The B4 lenses retain their 2/3 inch sensor DoF.