How to accurately calculate appropriate camera_distance, with real camera parameters and depth?

[pmj110119]

Hi there, loved your work so much!!!

But different objects require significantly varying camera_distance values. For example, the apple below needs the camera_distance adjusted from 1.9 to 5 to avoid rendering it as a "pancake."

I need the program to run automatically, so manual adjustment of camera_distance isn't feasible. Could you provide some suggestions for automatically calculating camera_distance?

I have real camera parameters and depth map about the image. Is there a way to accurately calculate the appropriate camera_distance for an object?