I need your guys help!
My Canon 30D got a "ERR 99" message and has stopped working.
I was shooting a sailboat race on the water; 90 degree day and no cloud cover.
Using the EF70-300 DO (at 300 mm)
Shooting in Aperture Priority at 8.0 (1/640 second)
The 30D is only a couple months old. Before it failed yesterday, I had taken 4,600 shots over the past couple of months with it.
When the camera failed:
In the midst of shooting several consecutive shots in the low-speed continous shooting mode, the camera failed and I got the dreaded "ERR 99" message.
I turned the camera off and back on on. Attempted a shot, got ERR 99. Took battery out and back in. Tried a shot, ERR 99. Swapped Lens (EFS 17-55). No dice.
The contacts between the lens and body seem to be absolutely clean. I have used only Canon lens.
The lens focuses and IS works.
But, after I press the shutter button to take a pic, the viewfinder goes somewhat dark and remains so for about three seconds and then it clicks and then the viewfinder is 100% clear again. Is that due to the aperture getting narrow and getting stuck for three seconds? Or is it due to the mirror getting stuck? Anyway, this happens no matter what lens I use.
Later that day, I removed the lens, the battery, and the CF card and let it sit for several hours. I threw everything back on with another Canon lens (28-135mm), different battery, same CF card, and I still get the ERR 99. Same deal with the viewfinder getting somewhat dark and holding for three seconds before it got clear again.
Tell me, what is your diagnosis of the problem (before I send it to Canon for service.)
And hopefully it didn't damage my lenses due to the aperture narrowing down for 3 seconds when it should have been narrowed for only 1/640th of a second.