Is it possible to change the aspect ratio on the 5D mark iii in movie mode? How can this be done?

[dhooser]

I can see where to change the aspect ratio in Live Mode but I cannot see options for movie mode on the 5D mark iii.

[Mykolas · Accepted solution]

Hi dhooser!

Thank you for posting.

Full HD video is shot at 1920 x 1080 resolution, which is a fixed aspect ration of 16:9.  Standard Definition video is shot at 640 x 480 resolution, which is a fixed aspect ratio of 4:3.  This cannot be changed like it can for still photo shooting.