>This is part and parcel of the problem. The shots were likely >in focus. But the noise signature obscures fine edges and >makes it seem like the subjects are slightly out of focus. >High ISO also robs contrast and dynamic range. > >When we add the required smoothing in post, it further blurs >fine edges and makes the images seem like focus was missed. >This is the bane of indoor sports photography. And it's why >all the big boys strobe indoors. This is simply not possible >in some instances and we battle the "is the focus >out" questions all the time. >
It's very true. most of the images at 3200 and above require some heavy PP noise reduction.