# Help! Model visibility bug when moving camera inside

**URL:** <https://discourse.threejs.org/t/help-model-visibility-bug-when-moving-camera-inside/74311>\
**Category:** Questions\
**Created:** [November 22, 2024, 4:45pm UTC](https://discourse.threejs.org/t/help-model-visibility-bug-when-moving-camera-inside/74311 "2024-11-22T16:45:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Nikita\_Sushkov](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/nikita_sushkov/32/52478_2.png) [@Nikita\_Sushkov](https://discourse.threejs.org/u/Nikita_Sushkov)\
**Post date:** [November 22, 2024, 4:45pm UTC](https://discourse.threejs.org/t/help-model-visibility-bug-when-moving-camera-inside/74311/1 "2024-11-22T16:45:06Z")

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Hi! I am new to three js (it’s my third day learning it, I guess) and I am stuck:)

I’ve been trying to animate a camera following a curve inside a 3d tunnel. Everything works fine except that a model dissapears on some curve segments when the camera moves inside. If I place a camera outside 3d model, everything looks ok and I don’t see any missing geometry. I figured out that changing camera fov to bigger values (\> 140) somehow fixes the problem, but I don’t understand how:)

Here is my code  
[https://codesandbox.io/p/sandbox/3qtxwh](https://codesandbox.io/p/sandbox/3qtxwh)

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**Author:** ![Chaser\_Code](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/chaser_code/32/20199_2.png) [@Chaser\_Code](https://discourse.threejs.org/u/Chaser_Code)\
**Post date:** [November 22, 2024, 5:32pm UTC](https://discourse.threejs.org/t/help-model-visibility-bug-when-moving-camera-inside/74311/2 "2024-11-22T17:32:56Z")

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`flow.object3D.frustumCulled=false;`

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**Author:** ![Nikita\_Sushkov](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/nikita_sushkov/32/52478_2.png) [@Nikita\_Sushkov](https://discourse.threejs.org/u/Nikita_Sushkov)\
**Post date:** [November 22, 2024, 7:53pm UTC](https://discourse.threejs.org/t/help-model-visibility-bug-when-moving-camera-inside/74311/3 "2024-11-22T19:53:47Z")

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Wow, it works! Thanks a lot