Dark Spots?

Hi everybody,
Today was my first day out shooting with the camera and I noticed a dark area on the screen while filming. I thought it might have been the lens but I cleaned the lens at it was still there. Tried some different lenses and the spot was still there.

https://www.box.com/s/wnbeqh1qgs5eafs835m1

https://www.box.com/s/ayteq59x3eb52fn06v0p

Any ideas? Dust on the sensor? Any insight would be appreciated. Thanks!

It very much looks like dust on the sensor, but I might be wrong.

Same thing happened to me. A little compressed air on the sensor will do the trick.

Thanks guys. I'll pick some air up tomorrow and see if that fixes it. Under any other circumstances I would have thought it was dust but I'm a bit paranoid with this camera for some reason.

I'd try a rocket blower first, less of a risk. Some compressed air cans can spray out a liquid depending on how the can is held.