I think I understand (from various reviews) that when using the A77 in dedicated video mode you can manually control exposer but you cannot use the camera's autofocus; that the autofocus will in fact work when shooting video in one the camera's still modes (non-dedicated video), but then manual exposure control is limited. Is this true of the NEX-7?
Also, relative to these two cameras, I believe the the A77 will not allow video above ISO 1600. Is this true of the NEX-7?
Both cameras do have audio input jacks. The A77 does not allow manual volume control. Is the same true of NEX-7?