# Shadow getting lighter when I use EffectComposer

**URL:** <https://discourse.threejs.org/t/shadow-getting-lighter-when-i-use-effectcomposer/48330>\
**Category:** Questions\
**Tags:** effect-composer\
**Created:** [February 22, 2023, 1:33pm UTC](https://discourse.threejs.org/t/shadow-getting-lighter-when-i-use-effectcomposer/48330 "2023-02-22T13:33:50Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Ritobrita\_De](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/ritobrita_de/32/33199_2.png) [@Ritobrita\_De](https://discourse.threejs.org/u/Ritobrita_De)\
**Post date:** [February 22, 2023, 1:33pm UTC](https://discourse.threejs.org/t/shadow-getting-lighter-when-i-use-effectcomposer/48330/1 "2023-02-22T13:33:50Z")

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I am using shadow material and plane for shadows. When I add effect composer the shadow color becomes lighter, from a dark grey to light grey in my case.

i am using GammaCorrectionShader, TexturePass, ShaderPass and OutlinePass in the effect composer.

Appreciate any help thanks!

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<div class="post-metadata">

**Author:** ![PavelBoytchev](https://yyz1.discourse-cdn.com/flex035/user_avatar/discourse.threejs.org/pavelboytchev/32/38639_2.png) [@PavelBoytchev](https://discourse.threejs.org/u/PavelBoytchev)\
**Post date:** [February 24, 2023, 5:28pm UTC](https://discourse.threejs.org/t/shadow-getting-lighter-when-i-use-effectcomposer/48330/2 "2023-02-24T17:28:54Z")

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My suspect is the use of gamma correction. This is just a feeling.

Is this related:

[Effect Composer Gamma Output Difference](https://discourse.threejs.org/t/effect-composer-gamma-output-difference/12039)