These cameras have a C-mount for lenses, but the Beaulieu cameras have other disadvantages, among which is their unique rechargeable battery system and the high cost of the equipment. For more about Beaulieu, see Pieces January 2000 . If you need a long zoom range, the Canon 1014 is one of several cameras with a 10 to 1 zoom, and the much less common Canon 1214 has a 12 to 1 zoom. For more about Canon super-8 cameras, see Pieces December 1999 . The shortest focal length you are likely to find is 6 - 7 mm., although some Eumig and Bolex models offer 4 mm. with an aspheric adapter.
Some cameras have a power zoom.
This may be powered by an independent motor or by the camera drive motor. In the latter case, the power zoom will not operate unless the camera is running. In a few cases, the power zoom offers variable speeds. Some lenses have macro facilities, others claim to be macro but offer a very limited close-up capability. If you need macro, check the camera's capabilities carefully.