The invention is related with the problem of utilizing data compression in a network of distributed stations. The microcable or minicable used for this purpose comprises a homogeneous and pressurized-water-tight tube which has an external diameter of from 2. The control unit obtains lens information from a lens apparatus of a television camera system and causes the LCD panel to display images representing the lens information so that the lens information is displayed as superimposed on the image on the viewfinder.