Automated exposures with TC-80N3 and miorror lockup

[clayk]

I want to take some unattended photos with my 10D and a TC-80N3 remote cable. I need to shoot a 3 minute exposure with 15 seconds in between each exposure. That is wasy enough. However, I want to shoot with mirror lockup. The only way I see to do it is to set the remote cable to the times mentioned above and enable mirrir lockup with the custom function. The only problem is that it takes 2 shutter actuations to actually start the exposure, one to lock up the mirror and one to open the shutter. This leaves, in the abouve example a 3 minute and 15 second gap between frames.

Am I missing something? Is there a way to just keep the mirror locked up like the old non electric camera days? Or is there a way to program the remote cord to shoot one exposure for 10 seconds to let the camera shake stop, then shoot a 3 minute exposure and loop?

Thanks for the help.

Clay

[RichardtheSane]

Have you tried setting the shooting more to self timer on the camera? This will flip the mirror up and take the shot 2 seconds later with one shutter actuation.

There is no way to hold the mirror up, because the mirror is held up electronically then you would loose battery power much quicker.