[Canon already has it] Only take picture if memory available

[SDX]

Something I noticed today and shouldn't take more than 5 minutes to implement:

Only make the shutter release when there is enough memory on the card available.
This could be added to the Shoot->Shoot Preferences.

It should be very useful for people like me, who use the intervalometer, MD and Audio Remote Shoot allot. Some times it happens that I accidentally fill up the memory card, because I underestimated the required space for a certain setup, forgot about the camera or used too low sensitivity on MD or ARS.

Would be useful to protect the shuttermechanism from doing useless work.

[wolf]

Like the idea.
But i guess it could take more than 5 minutes to implement it.