His graduation film Naučit se bát/ Learning to Fear, which looked at  the lives of young doctors received a whole range of awards and determined one of the main directions of his filmmaking.
In 1990, he started a long series of political documentaries from the countries of the former Soviet block awarded at numerous festivals: Japan Prix for Země bez hrobů (The Land without Graves), Prix Italia for Pozdrav ze země, kde včera znamenalo zítra ( Greetings from the Country Where Yesterday Meant Tomorrow) and others.
He filmed in Romania, Albania, various parts of the former Soviet Union, Kosovo, Nagorno-Karabakh, China, South Africa, Israel and many other places of political conflict. In 1995, Štingl launched his own production company K2 through which he produced several documentary series and a number of extensive coproduction documentaries.
Among the most extensive are historical accounts of the twentieth century: Deník pana Pfitznera (The Diary of Mr. Pfitzner); Čtyři páry bot (Four Pairs of Shoes); Příběh trosečníků Patrie (The Survivors of the Shipwrecked Patria), film of the year at FIAT/IFTA; Příběh o zlém snu (A Story About a Bad Dream), MTF Japan Award.
His films were screened at numerous international as well as domestic festivals, receiving a number of awards. K2’s largest projects include the feature-length film Mír jejich duši ( Peace to their Souls) and the extensive multimedia exposition of the new museum at the memorial of the town of Lidice, burned to the ground by the Nazis, A nevinní byli vini (And the Innocent Were Guilty), to become the most modern exposition on war history in the Czech Republic.

Filmography:

Naučit se bát/ Learning to Fear (20´, Czechoslovakia, 1985) Romania Libera (Czechoslovakia/Romania, 1990) Země bez hrobů (Czechoslovakia, 1991) Slzy vítězství Albánie (Czechoslovakia /Albany, 1991) Studentská láska (Czechoslovakia /Albany, 1991) Pozdrav ze země, kde včera znamenalo zítra (CZ/Russia, 1993) Quo Vadis South Africa…? (CZ, 1994) Světová válka v nás (39´, CZ, 1994) Takoví jsme byli (CZ, 1996) Čtyři páry bot (50´, CZ, 1996) Příběh trosečníku Patrie (51´, CZ, 1997) Kámen a poznání (59´, CZ, 1998) Deník pana Pfitznera (89´, CZ, 1998) Jen jeden pokus se životem (39´, CZ, 1999) Zaniklý svět Karla Pecky (50´, CZ, 2000) O zlém snu (50´, CZ, 2000) Selhání (55´, CZ, 2000) Chaos (CZ, 2001) Druhý život Lidic/ The Second Life of Lidice (58´, CZ, 2002) Návrat zapadlých vlastenců (58´, CZ, 2003) Malování potmě (56´, CZ, 2003) Mír jejich duši (80´, CZ, 2004) Popis jednoho zápasu (72´, CZ, 2004) Jára Cimrman (36´, CZ, 2005) Divadlo bláznivých dramat Borise Rösnera (56´, CZ, 2006) Suchá hora, dědina na konci trati (52´, CZ, 2007) Ghetto jménem Baluty (89´, CZ, 2008) Cesta k cestě (56´, CZ, 2009) Eugéniové (2013)