These two powerhouse pro digital SLRs were announced within a week of each other. They both cost about $5000, both have HD video, fast capture rates and a ridiculously high ISO 102,400 sensitivity. It’s impossible not to wonder which one is the better camera. So I thought it would worth the effort to, as closely as possible, do a back-to-back comparison of the Nikon D3S and. the Canon EOS-1D Mark IV.



