Hi,
I rendered a animation today and I get a movie with motion blur .
Is there a way to make it off ?

Hiya!
Yes, it is possible to disable motion blur. All you need to do is to set exposure time (the setting that controls the amount motion blur) to 0.

Thank you tatasz

Nice, that means I can increase too, if I want to!

Not only that, but you can adjust it on a per-iterator basis (the "Time scale" on the iterator node) So some can get stronger motion blur than others.