Katz practiced her craft of photography for two years before applying for her trade license in August 1922. Within three years, she opened her own studio at #18 Stubenring Boulevard. It was a favorable time for women to engage in business, as workers were scarce and many businesses were understaffed. Women who wanted to enter the workforce found openings in the arts including dance, film, photography, and radio studios, as well as in the theater. Katz built her reputation as a portrait photographer, taking pictures of society figures as well as artists and performers. Her repertoire expanded to include nude photographs and modern dance and by the 1930s, Katz was one of the most well-known photographers in Vienna. She participated in several art exhibitions and attracted students. Among those who studied with her were, Hans Popper, and Anton Josef Trčka. When the Nazis came to power in early 1938, initially Katz was allowed to continue teaching. Until Kristallnacht, she continued teaching and was allowed to produce photographs for emigrating Jews. Because she had approval to engage in business, she was not placed under surveillance and was able to liquidate her business and vacate the premises under the terms of her lease by 30 April 1939. After having given her notice, Katz terminated her registration as an Austrian Jew on 20 March 1939 and made plans with the assistance of William L. Shirer to leave the country. In April, she registered in London with the Jewish Refugee Committee. In May, she asked the committee for help in locating a shipping company to arrange the shipping of her luggage to the United States, but did not ultimately leave England, having found lodging in Oxshott, Surrey. Back in Vienna, under the Aryanization Laws, Franz Jungwirth, a Nazi bureaucrat, was assigned to liquidate Katz's business. His report, made in July 1939, indicated that the only remaining property at her studio were a few cameras and accessories, and minimal furnishings of no value. Her archive of photographs and negatives had been lost or looted. After the war, in early 1948, Katz married Ronald Lowis, of Shildon. He was a tobacconist and very involved in the localMethodist church. She became involved in church work and only occasionally took photographs.
Death and legacy
Lowis died on 20 January 1981 in Darlington, County Durham. From 22 October 2012 through 3 March 2013, the Jewish Museum Vienna hosted an exhibition, Vienna’s Shooting Girls: Jewish Women Photographers from Vienna, which featured the work of forty Jewish women photographers, including Katz. In the interwar period, two-thirds of all photography studios in Vienna, had been run by Jewish women and the collection paid homage to their impact on the city. Some of Katz's work is preserved in the Vienna Museum in a special collection dedicated to photographers who took pictures of the avant-garde dancers of the interwar era.