Hi. My question is: If you fix a camera target and then move the camera in a
plane parallel to the top viewport, the camera does not roll. However, if the
camera is moved in another viewport in its plane, the camera rolls while being
moved. How can you keep this from happening?
Thanks.
Helen Thomas
Thomas Dynamics Modeling, Inc.
Helen:
There are a couple of things to note about cameras and their behavior. Best
to create cameras in the TOP viewport and the rolling of the camera will then
be predictable with one major GOTCHA – Quaternions. The short answer is that
if you move a camera about the north or south pole you will experience a forced
role. To avoid this you can rotate your whole scene (link everything to a
dummy object first) by 90 degrees. If you created your camera in a viewport
other than the TOP you'll probably experience the roll you mentioned.
– Bob Ritger