Babej's photography-based series focus on conflicting belief systems in history, politics and science. Mask of Perfection examined the tensions between natural beauty and the "scientific" approach to beauty practiced in plastic surgery. His subsequent works have examined the after-effects of historical events such as the collapse of the Soviet Union in Chernogirls and the Roman heritage of Tunisia in Africanae. Mischlinge focuses on the impact of the Nazi era on definitions of national identity in the Federal Republic of Germany, combining images with genealogical DNA tests of the cast members and writings by himself, historian Thomas Kühne and Cem Özdemir, co-chairman of Alliance '90/The Greens. Unser Afrika focuses on supremacy and colonial genocide during, and in the aftermath of, the Herero and Namaqua genocide in the former colony of German Southwest Africa. Historians and genocide scholars Henning Melber, Jürgen Zimmerer, Ulrich van der Heyden and Joachim Zeller served as historical advisors on the work. The June 2018 premiere of Unser Afrika in Hamburg City Hall was widely regarded as having drawn attention to an overlooked aspect of German history.
Babej's latest work, Yesterday – Tomorrow: A Work in Aspective Realism, takes up the complex visual language of ancient Egyptian art. An international team of more than 50 specialists was involved in the work. Thirteen Egyptologists worked with Babej as co-creators of the "photographic reliefs" which form the core of the work: Christian Bayer and Oliver Gauert, Laurel Bestock, Peter Der Manuelian, Roxana Flammini, Salima Ikram and Mariam Ayad, Christian Loeben, Juan Carlos Moreno García, Matthias MüllerThomas Schneider, Regine Schulz and Steve Vinson. The preface of the Yesterday – Tomorrow book is written by his mentor, Roger Ballen.
Aspective Realism
In Yesterday – Tomorrow, Babej adapts defining characteristics of ancient Egyptian art, such as aspective representation, the canon of proportions and the integration of images, symbols and text. The resulting new art style, termed Aspective Realism, is regarded as "the revival of ancient Egyptian art after 2,000 years of dormancy." At the opening of the Yesterday – Tomorrow exhibition at the Egyptian Museum in Cairo, Head of the Museums Sector at Egypt's Ministry of State of Antiquities, Elham Salah, stated that Aspective Realism "revives the complex visual language of ancient Egyptian art and evolves it in contemporary photorealistic media."