Here is a detailed article by Peter Zheng about the internal dissections and PCB layouts of different DSLR models of different brands, namely, Pentax, Canon and Nikon ones:-http://docs.google.com/View?docid=df2k6qz2_89db3xzcdqIn the beginning of his article, an excerpt of a Japanese interview with the Pentax imaging department, about the concern of EMI (Electro-Magnetic Interference) of the
