Use a box with a pin hole over white paper. It works. Simple optical solution. You change the focus by going in or out from the paper.
Discussion
Thats way cooler!
Way cooler than permanent eye damage? No way!
Use a box with a pin hole over white paper. It works. Simple optical solution. You change the focus by going in or out from the paper.
Thats way cooler!
Way cooler than permanent eye damage? No way!