pedro said:
1) Did you take an ISO 204800 or 102400 photograph? I tried one at 102400, exposing well to the right (not a very dark room) and outcome was pretty well although it required quite some NR to make it look right.
2)What do you think can be expected from a 5DIV or 5DV (whatever they may call it) at hopefully about the same MP with an improved sensor design as the rumors are floating around? Will we see 51K or 102K IQ compared to what is now 25k IQ for the 5D series? Or let's say, will IQ at 102k improve at least half a stop or a as up to a whole stop in RAW until 2015 or 18?
1) Nothing other than
test shots in that range. I do use ISO 25600 and that works fine, I haven't (yet) had a need to go higher. To me, the ~2-stop advantage (considering both quantity and quality of noise) of the 1D X is maintained all the way up, so ISO 102400 looks about like ISO 25600 on the 5DII, and the latter was too high for me. On the 5DII, ISO 3200 was my normal cap, ISO 6400 was for 'emergencies' - so I treat ISO 12800 and ISO 25600, respectively, the same. But I did (very) occasionally use ISO 25600 on the 5DII, and so I will likely need ISO 102400 on the 1D X some day...
2) No idea. The 1D X is better at the highest ISOs than the 5DIII (0.5-1 stop advantage, IMO), so that suggests there's a bit of room for improvement in the 5-series.