Keyframe focus distance?

[Streetwise]

I'm animating a camera and can't figure out how to animate the "focus distance" parameter. The values just won't stick, but default back to the initial keyframe. Is this not possible?!?

[Morne]

I'm animating a camera and can't figure out how to animate the "focus distance" parameter. The values just won't stick, but default back to the initial keyframe. Is this not possible?!?

This seems like a VRayCam bug to me. I tested with vray next update 1 (not 1.1) and max 2019.3
With max's physical cam it works fine it seems


EDIT:
Hmmm weird, I updated Next to 1.1, now the Max cam behaves same as the VRaycam and both dont work....

[Streetwise]

That's interesting. It is an older V-Ray camera that's not working, so I tried a new VRayPhysicalCamera and same thing happens. But you're saying it is possible to key the focus distance, in theory?