Distortion of the lens

[Zvi]

I created an animation, and I don't know how to prevent the distortion of the lens, as shown in the attached image. Any changes I made in Perspective / Focal Length were not saved in animation.

[DriesV]

This is likely due to the Zoom animation you have there.
A Zoom animation is basically a fade from one focal length to another, and will override the focal length saved with the camera. Lower focal length values (in mm) yield stronger perspective distortion.

Dries

[Zvi]

This is likely due to the Zoom animation you have there.
A Zoom animation is basically a fade from one focal length to another, and will override the focal length saved with the camera. Lower focal length values (in mm) yield stronger perspective distortion.

Dries

Thanks Dries. It really solved the problem when I exchanged Zoom with Dolly. What is the difference betwin Zoom and Dolly?

[DriesV]

The concepts are similar to a real, physical camera.
Zoom is like turning the zoom ring on a lens. It changes the focal length, causing the subject to appear larger in the frame for higher focal lengths, while the distance to the subject remains the same (standing still).
Dolly is actually moving in and out with the camera. It changes the actual distance to the subject.

Dries

[Zvi]

The concepts are similar to a real, physical camera.
Zoom is like turning the zoom ring on a lens. It changes the focal length, causing the subject to appear larger in the frame for higher focal lengths, while the distance to the subject remains the same (standing still).
Dolly is actually moving in and out with the camera. It changes the actual distance to the subject.

Dries
Dries, thanks again for the detailed explanation.