A new documentary about film-maker Vilmos Zsigmond shows the risks he took filming secret footage of Soviet troops in HungaryThe visionary Hungarian-born cinematographer Vilmos Zsigmond does not care, I suspect, to dwell in the emotional terrain of the past. Perhaps the roots of that lie in the dying embers of 1956, when Soviet troops invaded his homeland and crushed the Hungarian revolution. To look back then, as he fled Budapest with clandestinely shot footage, would have meant death. "We had to be careful," Zsigmond says, "because the Russians had killed people just for taking still photographs."Zsigmond's life is the subject of a warmly received documentary by James Chressanthis called No Subtitles Necessary: Laszlo & Vilmos, which has just reached Los Angeles. The Laszlo in question is ...