Forgive me for being out of the loop but I didn't realize that the new Nikon D810 can be operated at ISO 64 even down to ISO 32. Wow that is amazing since only a few years ago the starting ISO range for some Nikon DSLR's was 200. I always wondered why the ISO numbers were getting larger and larger when I thought they should go lower just like in the days of film and slides. My question is does an ISO 64/32 translate into increased resolution ? Or is the lower ISO just there in case you want to decrease the shutter speed when shooting wide open ? I Remember that back in the days of film the lower the ISO the sharper the film. ISO 64 Fuji film was about as sharp as one could get, but you often needed a tripod !