After 1933, he devoted himself exclusively to photography, studying with Berenice Abbott at the New School for Social Research, and assisting Walker Evans on the project of photographing The Museum of Modern Art's African sculpture collection.
Like many of his contemporaries, Sekaer sought to capture the real world with photographs that combined artistic expression with a personal commitment to social change.
The photographs Sekaer made for the USHA, an agency primarily concerned with the removal of city slums and sponsorship of public urban housing, reveal his continued interest in the richness of human experience and environment.
[3] After 1942 he continued working for other federal agencies photographing briefly for the Office of War Information (OWI), and the American Red Cross-agencies whose agendas conflicted with his own, and limited his freedom in artistic expression.
Continually frustrated by this, Sekaer left Washington, DC for New York where he freelanced for several years, doing fashion and editorial assignments, until he died of a heart attack at the age of 49 in 1950.