hallo im a current canon mk1 user,do you think is it time for upgrading to 40D?

What, a 1D? That's not an upgrade, it's just kind of a sideways slide...
If you don't need the features the 1 series gives you, and need more resolution, go for it, but I'll be keeping my 1D for sports.

I mean, the fact that I can sync with non-TTL flash at 1/2000th of a second is pretty damn nice, let alone the great AF, the better viewfinder, the great looking out-of-camera JPG's, and the weather sealed body.

ok,but 40d you will have 6.5fps speed for sports.
close to 1d viewfinder,i dont think you can realize the difference.
AF is of course not even close to 1D
half weather sealed body,Hmmm.
what to do?

I'd wait for some tests of the 40D AF. It might be great... it might not.

i think AF on 40D will be better than 30D.
after seeing nikon s D300 AF,im disappointed in canonAF.
50D maybe..

you know though its taken Nikon a very long time to reawaken from their slumber.

>> canon mk1 user, do you think is it time for upgrading to 40D?

If you like your 1D and use it a lot, then a 40D will probably be a let down to use... Try getting a 1D MK II, prices seem t be falling quickly or even a 1DS MK I, same applies.

I got a 30D as a backup to 1D K II and hated it so much I sold it and got a 1DS.

Hope this helps.

Maybe wait for the upgrade of 5D. Hope it will come soon.