<p>Issues like these usually arise when you either have the layer transformed in 3D-space, or when using distortions and transform-effects on the layer. Since you do not have the 3D-checkbox ticked, I assume that you have some sort of transformation applied in the effect-controls. Did you use something like cc-lens, mesh-warp or turbulent displace? If so, first mask the layer, then precompose it, then apply the warping to it.</p>

CC BY-SA 4.0
2020-10-01T07:22:38.457Z
2020-10-01T07:22:38.457Z
Florian Claaßen
<p>I've made sure it's a mask and not a shape layer.  I've precomposed the layer just in case because I&quot;ve applied keylight.  There is no mask expansion applied.  Please help.  Thank you.<a href="https://i.sstatic.net/kEykY.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/kEykY.jpg" alt="enter image description here" /></a></p>

<after-effects><adobe><mask>
Mask in After Effects v 2020 is not accurate
Daniel Martin
# Mask in After Effects v 2020 is not accurate

(Asked by: username_0 on 2020-09-30)

I've made sure it's a mask and not a shape layer. I've precomposed the layer just in case because I"ve applied keylight. There is no mask expansion applied. Please help. Thank you.[![enter image description here](https://i.sstatic.net/kEykY.jpg)](https://i.sstatic.net/kEykY.jpg)

**Tags:** after-effects, adobe, mask


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## 1 answers

### Answer by username_1 on 2020-10-01. Score: 1

Issues like these usually arise when you either have the layer transformed in 3D-space, or when using distortions and transform-effects on the layer. Since you do not have the 3D-checkbox ticked, I assume that you have some sort of transformation applied in the effect-controls. Did you use something like cc-lens, mesh-warp or turbulent displace? If so, first mask the layer, then precompose it, then apply the warping to it.


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