Im really impressed with the 1D3 at high iso. I was a little concerned but after shooting 4 weddings with it , i am completely at ease up to 3200 iso. Im using the 5d2 for all large group formals, 1d3 for most everything else. There is not a hell of a lot of difference b/t these camera body files on the 5D2 and the 1D3 at higher iso. Definately nothing my clients can pick out. I think photographers get way too nit picky about this stuff to the point that is gets to be a bit of " my gear is better than your gear" bantering.
In my judgement, they are all exceptional cameras and it really boils down to how much you want to invest to have the latest and greatest photography gear. At this point, with the camera technology as it stands, clients will not see these minimul differences that trained photographers eyes will see, so in my mind, its all about bragging rights amung photographers
. Hate to be so blunt, but really, its just the simple truth especially if you spend any time testing the cameras and making honest real world comparisons.
I do understand the cropping argument for Birds in flight and that type of photography where a larger mp sensor clearly has its advantages. But i think for what 90% of photographers do, A 16mp sensor on a 1D4 v/s a 1D3 is not very much. Definately not enough to justify a $3000.00 price difference b/t the two camera bodies, especially if you own both formats and have a 5D2.
As for noise, Im not surprised by speeds results at all. 10mp v/s 16mp ?? I think on the center point the 5d2 is the king, as it should be with a 21mp full frame sensor. We all know the problem. Center point is not enough for most of us and its the AF systems that really distinguish these two formats for now. We shall see what we shall see with the 5D3 update, when and if it ever gets here.
I grabbed a used 1D3 that had a shutter count of 2697 for $2000.00. basically it was brand new. Best deal ive had to date for a camera body and especially for where the camera technology is today. My opinions are if you want the lastet and greatest grab a 1D4. But a 1D3 is more than enough. The 1D3 got a lot of unjustified krap thrown at it from photographers. Its one hell of a camera and now that its in a price range that i can justify, im darn glad to have it.
The new 1DsMarkIV will be a game changer. But its also going to cost $7000.00. Im not holding my breath on the 5D3 upgrade