To the customer who purchased CN-E70-200 mm T4.4 L IS KAS S : NOTE: When using the lens with the extender, be sure to adjust the back focus of the lens after attaching the extender.
Nor should it be forgotten that Canon long ago developed and manufactured 35 mm cine lenses for motion picture film – that won an Emmy back in the 1970 s . That was flanked by an even longer history in producing lenses for 16mm and Super16mm motion picture film cameras.