From IMDB user comments:
Black and white cinematography of Gritsius, the music of Shostakovich and the enigmatic face of Jarvet, makes all other versions of King Lear smaller in stature. Lord Olivier himself acknowledged the stark brilliance of this film. Oleg Dal’s fool lends a fascinating twist to the character. The “Christian Marxism” of Kozintsev can knock-out any serious student of cinema and Shakespeare.
Kozintsev is one of least sung masters of Russian cinema. His cinema is very close to that of Tarkovsky and Sergei Paradjanov. Kozintsev’s Lear is not a Lear that mourns his past and his daughters–his Lear is close to the soil, the plants, and all elements of nature. That’s what makes Kozintsev’s Shakespearean works outstanding.