diff --git a/slides/ws-video/slides.md b/slides/ws-video/slides.md
index b04c4e8cb41ae51495c3f31e2c9c4b8c66273a07..92981aa5e3a0ec6b52c96c8357e8213ddd22de6a 100644
--- a/slides/ws-video/slides.md
+++ b/slides/ws-video/slides.md
@@ -101,19 +101,25 @@ https://en.wikipedia.org/wiki/Aperture#/media/File:Lenses_with_different_apertur
 - Low ISO -> less sensitivity to light
 - High ISO -> more sensitivity to light (but more digital noise)
 
+<img data-src="https://upload.wikimedia.org/wikipedia/commons/8/87/Highimgnoise.jpg" width="100%"/>
+
 |||
 
 ### Dual Native ISO
 
-- ISO < 1250 -> Native ISO 400 
-- ISO > 1250 -> Native ISO 3200
+Native ISO: Best possible dynamic range while shooting with these ISO values.
+
+- bright conditions ISO under 1250 -> Native ISO 400 
+- low light condigions ISO above 1250 -> Native ISO 3200
 
 ---
 
 ## Lenses
 
-- Prime lense with a fixed focal length. No Maginification of the image but a faster apterture.
-- Zoom lense with an alternating focal lenght. 
+- Prime lense with a fixed focal length. <br> faster apterture
+- Zoom lense with an alternating focal lenght. <br> magnification of the image
+
+<br>
 
 - Canon EF 24-105mm f/4,0 L IS II USM
 - Canon EF 16-35mm f/4,0 L IS USM
@@ -125,12 +131,19 @@ https://en.wikipedia.org/wiki/Aperture#/media/File:Lenses_with_different_apertur
 ### Focal Length
 
 common focal lengths for wide lenses: 18mm, 24mm, 35mm -> less magnified
-common focal lengths for tight lenses: 85mm, 100mm, 135mm -> more magnified
 
 a focal lenght of 50mm is concidered a standard lense equal to the human eye.
 
+|||
+
+### Focal Length
+
+common focal lengths for tight lenses: 85mm, 100mm, 135mm -> more magnified
+
 long focal length compresses the background and helps isolating a subject.
 
+
+
 |||
 
 ### Iris / Stop