I shot a high school football game tonight. I can remember in the old days pushing Tri X black and white film to an ASA of 1200 and developing it specially. No matter what you did you had a lot of grain. We call that noise today.
Tonight I shot these 4 images at ISO 10000 (ASA was changed to ISO, ASA stood for American Standards Association and ISO stands for International Standards Organization).
I am always surprised how little noise you have and the noise I did have I corrected in Photoshop with the Plugin by Topaz, DeNoise.