[1] A freelance photographer since 1987, his artistic work is primarily concerned with various special photographic techniques such as the instant camera, the photo-, chemi- and lumigram,[2][3] camera- and negative-less photography and in-camera negatives.
[6][2] The central elements in the work of Schnelle, whose "abstract works occupy a singular [photographic] position within Austria",[7] are always the medium of photography itself, the properties of light and space and of movement and time, and the traces that objects leave in the image under the influence of the processes inherent in photography.
[10] Kurt Kaindl locates the interests of Schnelle's photography in the "explorations of the instrumental, chemical and optical foundations of photography [and in] the basic interest in pictures and their esthetic and poetic qualities, which find their validation only in the viewer".
[...] Schnelle's photographic oeuvre is characterized by an experimental character and a concrete signature.
Light, space and time form the constants in an intensive creative process that oscillates between experiment and calculation.