I built a camera rig to lift a camera from horizontal to straight-up vertical over a map while tracking a target. Everything works fine up until about 80 degrees vertical when the target up vector causes the camera to lose orientation. Is this related to the dreaded gimbal lock problem?
I have tried relocating the up vector object in various ways to try and avoid the “double-90” problem (camera and upvector cancelling each other) but nothing seems to work. I can fix it manually, but I prefer the simpler approach.