I used my 473nm lab laser since it was right next to my 612 and it has terrible divergance. I wanted to try and get equal brightness so I didn't use my jetlasers 473.
Decided to aim my camera almost directly into the opening of my 612nm
its kinda interesting how you can see the circles created by diffraction from the tiny hole reminds me of the double slit experiment thing where you point a laser at a piece of tinfoil with 2 slits cut into it...