Two prototype EMI Emitron cameras

On the left is an early 1934 prototype. It was used demonstrate all electronic television to the Selsdon committee in 1934 to 1936. It was modified to run on 405 lines, interlaced, in January 1935. Of note is the camera cable which looks to be fixed, before the introduction of the camera cable connector.
In various pictures the camera is often pictured being operated by Mr. Bernard Greenhead.

On the right is a slightly later camera in a more "finished" casing, but still without viewfinder.