I have a Canon 50D and have problems with the shutter release. I always shooot in manual mode and ater pressing the shutter release button hafway down to obtain focus, the shutter does not want to release, Only after holding it down for about two - three seconds does the shutter release. It is impossible to take action photos with this camera. I have cheched the following:
1. Mirror Lockup is disabled
2. Switched between AV, TV, Manual and Auto. In all modes the same thing happens.
3. Used different lenses and the same thing happens.
I think this camera need to go in fo a major checkup. What do you think can be wrong?

