His picture of an armoured personnel carrier standing in front of Warsaw's "Moscow" cinema screening Apocalypse Now became one of the icons of the martial law in Poland.

[1] In 1978 Niedenthal was the first to document the town of Wadowice, the hometown of Karol Wojtyła immediately after the latter had been elected Pope John Paul II.

[1] After the community leadership introduced martial law, Niedenthal was one of very few foreign photographers documenting the reality in Poland for western media.

Among such pictures was one that became an icon of that part of Polish history, depicting a SKOT APC standing in front of a cinema in Warsaw, with a large banner advertising Francis Ford Coppola's Apocalypse Now in the background.

[1] His 1986 picture of Hungarian communist leader János Kádár was used on the cover of the international edition of Time magazine and was awarded a World Press Photo prize for that year.