ARRI Projection HDTV - Manual (Page 14)

14
Crop box handling with the aspect unlocked:
If the image should not be cropped in order to get the
selected output format the ´lock aspect´ button

photo
can be switched off. This mode allows to only downsize
the aspect ratio starting from the chosen ratio in the
‘output format’ node. The result is a horizontally-
centered image with a letterbox on both sides. Check in
the film view for the look. The projectable image height
remains constant according to the chosen projection
aspect ratio.
To enlarge the aspect ratio (e.g. 1.66 to 1.85) means to
decrease the projectable image height. To do so, change
the projection aspect ratio in the output node!
Drag a side -> vary the size fixed
to the opposite side.
ALT + drag a side -> vary the size and aspect
fixed to the center.
Operation
2.2.