The D3/D300 will have usable ISO 3200 and possibly even 6400. With 25600 now available I am fairly certain that IQ at this almost insane level will be good on a D4 (can I say that?). So, ISO 51200 will very soon be available. Does it make sense any longer that we keep using this doubling of numbers? Why not start a new acronym, say DSO, or DSR (Digital Sensitity Rating), or whatever so that ISO 200 becomes DSR 1. (ISO 100 can be DSR 0.7 or something) Given that ISO 800 is now almost noise free why can't this be DSR 2. I am not aware if there is an ISO command dial on the D3/D300 but how on earth are they going to fit 51200, 1024000 on newer models?