Why is my perspective view occluded?

[Blender version:2.79]
I have a blender file which works perfectly if I choose ortho mode, but if I press 5 and turn to perspective mode it would show like this.
In the perspective mode, I can only view it from a long distance that means if I try to slide the wheel to zoom in, it will occurs the occlusion error.
NOTE: I checked this in my other blender files. They all behaved normally, just this file has the problem.


Could anyone give a hand or some suggestions to fix it?

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Your viewport is clipped. You can change it via side bar (hit ‘N’) and set a reasonable distance for start/end according to your scene.
image

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That works!! Thank you very much!

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Welcome to the forrum. :slight_smile:

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