Hi there,
I’m trying to make a dolly zoom effect through the keyframe animation. When I set the focal lens for both keyframe, it adjusts the camera distance well but distance and focal lens are not consistant between keyframes.
On 2s animation, start with distance : 20cm / focal lens : 200mm and end with 1cm / 10mm. At 1s (middle) KS set 10.5cm / 27.671mm instead of 10.5cm / 105mm altough the animation is set to linear.
Anyone have an idea on how to fix that ?
Thanks
Hi Pierre,
That is because it’s the field of view that’s linearly interpolated, not the focal length. If you look at the values of the field of view, you will see they are consistent with a linear interpolation:
0s = 10.286
1s = 66.088
2s = 121.891
And 66.088 = (10.286 + 121.891) / 2
If you would like the focal distance to be linearly interpolated instead, in the current version of KeyShot you have no choice but to create more keyframes to “force” the animation to take the values you want it to take. I know this will can be cumbersome for multiple reasons, but I don’t have any better workaround to offer right now, sorry.