This is pretty cool.

[MrDrizz]

View: https://m.youtube.com/watch?v=7n-eAYZt6Bw&feature=emb_title


Nice to see younger folk interested.

 

[StephenM]

Before it was closed (probably permanently) by the first lockdown, I used to demonstrate a camera obscura. People found it interesting. Years before my time, an arty type used it to make prints from the viewing dish (I think I was told he used a toilet seat as a shutter, as the lens was in the ceiling with a mirror above that). I said arty, as apparently he performed after work on the prints.... I never saw the (fire enhanced) result.

Edit to add. I have a couple of videos showing the camera in action. It rotates to give a full 360 degree view. I can supply a link for the interested, but it would involve a download.

 

[Mostly Vintage Cameras]

It is cool and interesting. I did something similar in a flat I used to rent and I encourage others to do so as well. It's also a great learning experience for children. I just used bin bags and a two holes cut in cardboard, one a 1p coin size the other 2p. With these you can see the effect on brightness and sharpness of changing the hole size. If I did it again (and I'm sure I will) I will also try a star or heart shaped hole. I wanted to use a lens but as best I could figure I would need a +0.25 to focus at the 3 or 4m distance of the wall from the window and I couldn't find one.
It's really weird to sit in the dark and watch cars driving across your ceiling and the sun come down and building turn lights on.