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diff --git a/slides/ws-video/slides.md b/slides/ws-video/slides.md
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--- a/slides/ws-video/slides.md
+++ b/slides/ws-video/slides.md
@@ -198,11 +198,31 @@ Iris more closed -> f22
 
 ## Light
 
+
+|||
+
+### Color temperature
+
+<img data-src="https://git.noc.ruhr-uni-bochum.de/makerspace/homepage/-/raw/main/slides/ws-video/wb.jpg" width="100%"/>
+
+CC BY-SA 4.0 <br>
+800K - 12200K (linear) <br>
+By: Bhutajata <br>
+Changes: added example pictures <br>
+https://commons.wikimedia.org/wiki/File:Color_temperature_black_body_800-12200K.svg
+
+|||
+
+<!-- .slide: data-background-image="https://downloads.blackmagicdesign.com/videos/products/blackmagicpocketcinemacamera/landing/bmraw/0x1u6zppa9/color-temp.mp4"-->
+
 |||
 
 ### Lightsource
 
 - Hensel Intra LED
+- Color temperature: 5400K
+
+<img data-src="https://git.noc.ruhr-uni-bochum.de/makerspace/homepage/-/raw/main/slides/ws-video/led.jpg" width="75%"/>
 
 |||