diff --git a/slides/ws-video/slides.md b/slides/ws-video/slides.md
index bbb016ac83d51b5df7f0763e198c6960efe98008..18d877325468b14d7cf57002fc1f482143809e48 100644
--- a/slides/ws-video/slides.md
+++ b/slides/ws-video/slides.md
@@ -48,8 +48,6 @@ _Maximum sensor frame rate dependent on resolution and codec selected. Project f
 
 ### Aperture
 
-f-Stop on Photography lenses
-
 <img data-src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Lenses_with_different_apertures.jpg/2560px-Lenses_with_different_apertures.jpg" width="50%"/>
 
 <font size=”1”> CC BY-SA 4.0 <br>