[550D] Intervalometer with mirror lockup

[-sandro-]

Is it possible to take pictures for a timelapse without having the mirror to move between every pictures aka take silent-ish pictures? I noticed mirror lock up has "self timer" as option, what does it mean? I wasn't able to lock the screen. Not even live view.

[dmilligan]

Why?

[kitor]

Maybe not to increase shutter count and remove vibrations?

[Levas]

You can use mirror lock up and intervalometer together.
But you need to set the interval time twice as fast as you normally (without mirror lock up) would do.
Because with mirror lock up it takes one photo per 2 intervals, cause one shot is used to move the mirror up and the next shot takes the actual photo.

Don't know if it's technically possible to move the shutter multiple times without moving the mirror.
I've read somewhere that in some canon DSLR's both are controlled with the same electro motor.
In case of one motor it needs to set the mirror back before it can actually rewind/use the shutter.

[dmilligan]

Maybe not to increase shutter count and remove vibrations?

the shutter still actuates and shutter count increases even if the mirror is locked up

remove vibrations?

is it really noticeable? perhaps you just need a better tripod