System Information
Operating system: Windows 10
Graphics card: GeForce GTX 860M (also tested on 960)

Blender Version
Broken: 2.82, 2.83 alpha 8751af6d1902
Worked: not found

Short description of error
When the metadata information is activated some scene information is written on the rendered images. The value of the camera lens is wrong when it refers to an animated lens in the scene (the written value is always the same... )

Exact steps for others to reproduce the error
Create a camera and an object, animate the camera lens so that you see the framing changing over time. In Output Properties - > Metadata check Camera and Lens. Do a render of the sequence. The written values are constant whereas the lens changes on the camera.
See provided scene:

This is really annoying when in real production.

Thank you