Two settings fix this. On the Global tab set Camera height (m) to about 1.4 - 1.7 and
Height random (m) to 0 - 0.1 - the random is what dips the camera under the sheet. On the
Subject tab lower Max look-up (deg) to 10 - 20: the camera always aims at the focus, so
limiting the angle also limits the position, and it can no longer sit below the subject's
horizontal line. Optionally set Max look-down (deg) to 30 - 45, and keep Avoid obstacles on.
If your scene itself is raised, note that Camera height is measured from world y = 0, so add
your floor height to it - a bed platform at y = 3.0 with 1.5 m wanted above the mattress means
about 4.0 - 4.5.
When it looks right, click Save in the Preset row of the Subject tab, name it e.g. Bed, and just
Load it next time. Print diagnostics copies the camera height and eye pose to your clipboard if
you want to send me the numbers.
