I am hoping someone can help with my problem with my 300D. When I shoot my first shot, the camera functions properly in all modes. On the second shot, it will try to raise the mirror but the mirror does not go up. It only moves a very small amount. Subsequent attempts may produce a normal exposure sequence or the partial mirror raise type. Eventually it may go to an err99.
When I go to sensor clean mode, the mirror will either raise normally or seem to get stuck. If it is stuck, I can give it a very gentle nudge and it will pop right up. When the mirror lifts, the shutter is always open. Once I get the mirror to lift in sensor clean mode, all subsequent attempts work properly.
I then installed the undutchables firmware and implemented mirror lockup with a 4.5 second duration. Then I went to Tv mode and set the shutter speed to 3 seconds so that I could watch everything that happens. Sometimes the mirror will stick but it always goes up with a gentle nudge. The shutter always works properly.
I then restored the firmware to the latest Canon version.
This doesn't seem to be the sub mirror pin problem because the sub mirror seems to work every time. It doesn't seem to be a bad shutter either. The little spring on the right side of the mirror ( as you are looking at the mirror) looks like it is in the right position.
I also tried removing the main and backup batteries and the CF card for 30 minutes to reset the system. This had no effect.
I tried two other lenses which work well on my other 300D to no available. I tried a different CF card. A fully charged battery. So far, nothing has had any affect.
Has anyone ever seen this problem? Do you know how to fix it?
Thank you.
When I go to sensor clean mode, the mirror will either raise normally or seem to get stuck. If it is stuck, I can give it a very gentle nudge and it will pop right up. When the mirror lifts, the shutter is always open. Once I get the mirror to lift in sensor clean mode, all subsequent attempts work properly.
I then installed the undutchables firmware and implemented mirror lockup with a 4.5 second duration. Then I went to Tv mode and set the shutter speed to 3 seconds so that I could watch everything that happens. Sometimes the mirror will stick but it always goes up with a gentle nudge. The shutter always works properly.
I then restored the firmware to the latest Canon version.
This doesn't seem to be the sub mirror pin problem because the sub mirror seems to work every time. It doesn't seem to be a bad shutter either. The little spring on the right side of the mirror ( as you are looking at the mirror) looks like it is in the right position.
I also tried removing the main and backup batteries and the CF card for 30 minutes to reset the system. This had no effect.
I tried two other lenses which work well on my other 300D to no available. I tried a different CF card. A fully charged battery. So far, nothing has had any affect.
Has anyone ever seen this problem? Do you know how to fix it?
Thank you.