... Room installations such as Bill Viola's “Going Forth by Day” (2002) and “Transfigurations” (2007), and Detlef Günther's Giotto Experiment (from the “Heaven Opens” Trilogy - 2004/09), intentionally break away from the expectations of internationally exhibited art, and make possible a socially sustainable discourse across technical-artistic dimensions. With regard to Günther's work, which oscillates between technology and cognitive contexts, I have recognized a general underlying principle: The re-appropriation of “We” through the “artistic individual.” The vehicle for this can be seen very clearly on the one hand as the transfer of purposeful-necessary work to the realm of technology (social sustainability), while on the other hand, it is very abstractly discernible in the generation of ecological-purposeless spaces (political fantasy).

Arthur Engelbert, 2009
(excerpt from the catalogue: Detlef Günther-HEAVEN OPENS)

     Günther's themes, focussing on human perception and human commemoration - memoria - and simultaneously raising the issue of a new quality of existence are guided by him through all voices and visual media. Since the beginning of the 90s, paintings, drawings, objects, installations, photographies, videos and multimedia environments have been developed, often combined by the artist in groups and cycles. ... He permanently traces the potentials of perception, the ambiguousness of reality, and the dependence of meaning on context. 

Angelika Sommer, 2006