We don't see the world how it is.
We see the world how our brain perceives it. Welcome to 30 of the world's BEST optical illusions.

“Image(s) and/or video used under licence from shutterstock.com”

Some images used are in the public domain.

The animated video depicting the brain connections is used under enhanced licence from shutterstock.com

The following images are used under the relevant creative commons licence. Unless noted with * no changes were made to the images - however the image may have been ‘zoomed in’ for the purposes of the video presentation.

CC BY-SA 3.0 DEED
Attribution-ShareAlike 3.0 Unported
https://creativecommons.org/licenses/...

The Herring illusion* by Fibonacci.
Penrosetrianglemodel* by Chylld (Background removed and I publish the image under the same licence above as per licence requirements).
Zollner illusion* by Fibonacci.
Pogenndorf* Illusion by Fibonacci.
Troxler fading by Mysid
The Spinning Dancer by Nobuyuki Kayahara
Anomalous motion illusion by Cmglee
Cafe Wall illusion by Fibonacci (Black and white)
Cafe Wall illusion (lower contrast) by Fibonacci, JPxG
Photo of Prof Richard Gregory by StevenBattle
Kanizar’s Triangle by Fibonacci
Müller-Lyer illusion by Fibonacci
Motion Blindness by Mlechowicz

CC BY-SA 4.0 DEED
Attribution-ShareAlike 4.0 International
https://creativecommons.org/licenses/...

Checker Shadow illusion* by Pbroks13 (Also used in the thumbnail)
Hollow face illusion by cmglee, hong227.
Hollow face illusion by Empetrisor
Jastrow illusion* by Ag2gaeh
Stepping feet by Rinuraeni
Stepping feet illusion explanation by Rinuraeni
Hybrid image illusion example love war by Pablo Carlos Budassi
Southeast hybrid image illusion by Cmglee.
Roger Shepards tables* by tables.


The Herring Illusion by Fibonacci was changed to show a dark blue background - demonstrating that the red lines were parallel. I make this clip available (publish it) under the same licence (CC BY-SA 3.0 DEED) pursuant to the licence conditions.

The Jastrow illusion by Ag2gaeh has been animated to allow the viewer to make a size comparison, the background has also been removed. I publish/make available this clip under the same licence (CC BY-SA 4.0 DEED) pursuant to the licence conditions.

The Zollner illusion by Fibonacci has been changed to show that the lines are parallel when the short lines are removed. I make this footage available (publish it) under the same licence (CC BY-SA 3.0 DEED) pursuant to the licence conditions.

The Pogenndorf Illusion by Fibonacci utilises both of his images. The have not been changed but have been merged together to show the effect on screen. I make this footage available (publish it) under the same licence CC BY-SA 3.0 DEED Attribution-ShareAlike 3.0 Unported pursuant to the licence conditions).

The Checker Shadow illusion has been animated to show that both tiles are the same colour. I make this footage available (publish it) under the same licence (CC BY-SA 4.0 DEED Attribution-ShareAlike 4.0 International) pursuant to the licence conditions. The Checker Shadow illusion has also been used in the thumbnail for this video.

Roger Shepard’s tables have been changed/animated to show that the table tops are the same size. I make this footage available (publish it) under the same licence (CC BY-SA 4.0 DEED Attribution-ShareAlike 4.0 International) pursuant to the licence conditions.

Thank you SO much for watching this video. Please consider subscribing.