I have a question for anyone knowledable of digital imaging versus film grain (and how cameras work in general):

It seems to me that when I focus my eyes on objects in the real world, other objects behind them will be out of focus. However, despite the fact that those objects are out of focus, they are not out of focus in a soft, blurry way. If I work hard to keep my mind centered on the out of focus portion of what I see, there are complex, small details making up that out of focus (due to distance) portion. I think that's the main reason why grain free images bother me (they just soften everything that's out of focus into a big mush when my eyes mix up that information in more complex ways). So, does that make sense in terms of everything technical we know about photography or am I just crazy? :)