# Lumen GI behaves in strange way

**URL:** <https://forums.unrealengine.com/t/lumen-gi-behaves-in-strange-way/1226796>\
**Category:** Programming & Scripting\
**Tags:** unreal-engine, Global-Illumination, Lumen, Rendering, Lighting, question\
**Created:** [July 12, 2023, 7:07am UTC](https://forums.unrealengine.com/t/lumen-gi-behaves-in-strange-way/1226796 "2023-07-12T07:07:50Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![skokonXD](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@skokonXD](https://forums.unrealengine.com/u/skokonXD)\
**Post date:** [July 12, 2023, 7:07am UTC](https://forums.unrealengine.com/t/lumen-gi-behaves-in-strange-way/1226796/1 "2023-07-12T07:07:50Z")

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Is this normal?  
I’m using default settings

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**Author:** ![ClockworkOcean](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/clockworkocean/32/1169999_2.png) [@ClockworkOcean](https://forums.unrealengine.com/u/ClockworkOcean)\
**Post date:** [July 12, 2023, 7:30am UTC](https://forums.unrealengine.com/t/lumen-gi-behaves-in-strange-way/1226796/2 "2023-07-12T07:30:00Z")

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Yes 🙂

Lumen reacts to camera location.

You can tweak the distances and other processes involved with a post process volume

 ![image](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/a/28a93029423f6ef784a16fd1ddc290366f705f42.png)

I would be tempted to tinker with those quality settings.

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<div class="post-metadata">

**Author:** ![skokonXD](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@skokonXD](https://forums.unrealengine.com/u/skokonXD)\
**Post date:** [July 13, 2023, 5:35am UTC](https://forums.unrealengine.com/t/lumen-gi-behaves-in-strange-way/1226796/3 "2023-07-13T05:35:45Z")

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Actually that wasn’t the default behaviour, after testing i found out that HDRIBackdrop was causing this

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**Author:** ![ClockworkOcean](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/clockworkocean/32/1169999_2.png) [@ClockworkOcean](https://forums.unrealengine.com/u/ClockworkOcean)\
**Post date:** [July 13, 2023, 6:25am UTC](https://forums.unrealengine.com/t/lumen-gi-behaves-in-strange-way/1226796/4 "2023-07-13T06:25:45Z")

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Very good 🙂

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**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\
**Post date:** [August 12, 2023, 6:25am UTC](https://forums.unrealengine.com/t/lumen-gi-behaves-in-strange-way/1226796/5 "2023-08-12T06:25:55Z")

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