Interesting reading, i just bought me a d90 body and went out this morning to be met with a very dark cloudy day, it was rain/hail/sleet turn about. Ok not dark with floods but it was very grey, i used my 55-200 vr nikon lens and set the d90 to min shutter 1/500, shot using A mode as wide open as possible which varied between f4-f5.6 due to the lens and it averaged iso 1400. The results were impressive because my old d40 was so useless in such conditions it wasnt worth even trying but today with the 3d-tracking and high speed continous shooting i was happy with them. They are not razor sharp at 100% but at normal screen viewing size they are very sharp and look great.
Not posted any up cos not sure if the parents be happy about their 11 yr olds being plastered all over the web so cant add a link unfortunetely.
Anyway best ignore me, still learning and today was first shot at this kinda thing, previously i had tried to photo the whippet(not a slow dog by any means lol) but always ended up with very underexposed or blurred shots. I did attempt shooting my mates in the woods on their bikes with this lens and d40 once but failed miserably which resulted in the 50m f1.8 going on and pre focussing before the proper run with the sb-600 which worked very well.
Mike
This morning it was dark enough that the lights were on in the carpark behind and it gave you the impression it was dark