worked for Leitz for almost 40 years. He has written several books about traditional Leica cameras. In 1993, he took over as director of the Leica Academy. He devoted special attention to the Leica M, one of the most popular cameras among professionals and photojournalists. Over the years, he has continually revised and added unknown information and stories about this legendary camera. He has dedicated his life to this special technology, which continues to make the hearts of collectors beat faster