Thanks for that @jamesstaddon!
It all depends on the sensor. It looks like the 60D’s sensor is very similar to what’s in the T2i, which doesn’t deal with ISO all that well, so that’s probably why you’re seeing grain, even at ISO100.
Makes sense! It’s a shame though. . .
This would be a good thing to research though. At ISO, would a picture taken in bright sunlight have the same amount of grain as a picture taken at dusk (as long as the shutter speed wasn’t longer than a second or two)?
Hmmm. . . yes, that would be an interesting experiment to do. Now that you mention it, I’m pretty sure that there’s an amount of noise in all my photos. I’m going to try it out! Was there a particular ISO that you meant to say would be good for trying it out?
That makes sense about getting noise from long exposures. The article by Digital Photography School was interesting. Thanks!