Fluent in the Thai language, Nostitz is noted for specializing in what he considers to be the "lower levels" of the country's society seldom seen by casual visitors.
Nostitz used black-and-white photographs to depict both the allure and sadness connected with the Thai sex industry in his 2001 book Patpong: Bangkok's Twilight Zone (ISBN 0-9537438-2-9).
In 2004, he documented the violent war of then Prime Minister Thaksin Shinawatra against alleged drug dealers with a series of photographs.
[2] On 25 November 2013, during the People's Democratic Reform Committee demonstrations in Bangkok, he was attacked by PRDC supporters that accused him of being pro-Red Shirt.
[3] He said he was planning to return to Germany but was sliding "into a very difficult situation", since he had long been unable to work and even now, as an example, did not dare to travel in the south of Thailand because that is the PDRC draws its main support.