“Camera” is Latin for “Chamber”, or “Room”.
“Aperture” is Latin for “Opening”.
To make a room-sized camera, you’ll need a room with an opening that can let light in.
An 11-foot by 9-foot room will be the interior of our camera.
A 70-inch by 25-inch window is the aperture that controls how much light enters the room.
By darkening the room and placing various-sized holes over the window, we can begin to see an image of the outside world on the interior walls of the room.
The effect is similar that of a photographic camera… but this camera is large enough to also house the photographer within it.
If we replace the circular window aperture with an elongated slit, we get different effects, as shown below.
To try this experiment yourself, you’ll need three things:
- A room that can be darkened
- Cardboard with a hole in it, to serve as the aperture
Get the room as dark as possible, and then cover the window with the cardboard aperture.
Small cardboard aperture = dimmer but sharper image.
Large cardboard aperture = brighter but fuzzier image.
To see the whole camera-obscrura-making process, including the totally-unnecessary math equations, here’s a video with basically the same content you can view in these gif images.
Most smartphone cameras have a limited ability to focus on objects very close to their lens.
Place a piece of foil with a pinhole over your smartphone camera lens and it will be able to resolve images very close to the lens.
For more information on how this is working, try an online search for “pinhole photography”.
Regarding questions you may have:
-Any kind of needle will work, just be sure to twist it slowly as you press it into the foil.
-Any kind of foil will work, including candy bar wrappers (and mini peanut butter cup foils).
-Any kind of smartphone will work, with some smartphones showing more corner-darkening than others (this is called “vignetting”).
Some fun things to photograph:
– Your eyeball – Postage stamps – Sand – Pizza – Denim – Your mouth – Magazine Ads – Wood – Ants – Flowers – Fingers – Pizza – Snails – Water drops – Your nostril – Coins
If there is sufficient interest, I’ll provide a follow-up video with more specifics and examples.
Have fun with your new lens on life! 😀