# How to set the lighting parameters to achieve the shadow I want

**URL:** https://discourse.vtk.org/t/how-to-set-the-lighting-parameters-to-achieve-the-shadow-i-want/8572
**Category:** Support
**Created:** [May 24, 2022, 9:12am UTC](https://discourse.vtk.org/t/how-to-set-the-lighting-parameters-to-achieve-the-shadow-i-want/8572 "2022-05-24T09:12:49Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![qysmile123](https://discourse.vtk.org/user_avatar/discourse.vtk.org/qysmile123/32/5204_2.png) [@qysmile123](https://discourse.vtk.org/u/qysmile123)
#### Post date: [May 24, 2022, 9:12am UTC](https://discourse.vtk.org/t/how-to-set-the-lighting-parameters-to-achieve-the-shadow-i-want/8572/1 "2022-05-24T09:12:49Z")

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Hello，I’m currently working on a rendering, but my lighting settings don’t achieve the shadow effect I want.

 ![image](https://discourse.vtk.org/uploads/default/original/2X/1/1a2304a633e4fb1010969bcb82121b5c20899298.jpeg)  
This is an internal image of a tracheal model.I hope to achieve the effect of depth of field through light attenuation，But I don’t need the pleated shadow on the pipe wall.How to eliminate this shadow effect to make the pipe wall look smoother？