wow. if you think d90 ISO noise is bad, have you ever ever ever tried the d50/70 or d80 or d200?
iso1600 is still good compared to all those bodies. rule of thumb if your ISO max is 3200, never exceed 1600. if its Hi1 or 6400 never exceed 3200. always 1/2 way mark. never more
Totally agreeable...I find that D70 is good till 1250 ISO depending on lens use. D90 max at 800iso?? tt's weird...probably shooting with alot of shadows...;p