Move recording window to couteract/enhance effect of fish-eye

[vk4tnt]

Hi there

Under normal circumstances a 5D mk2 will record full HD movie blanking out the top and bottom of the unused sensor area.
Would it be possible to shift the recording window to the top or bottom to counteract or enhance effects of a fisheye lens?

Thank you for considering my question.
Regards,

Renato Langersek