Pin the Hole on the Camera

Our Light and Sound course is about, as stated, light and sound but also time, and how they all relate. It has to do with our perspective on the world and how it would be different if those three elements were different. Our first unit is Light where we discussed how light affects us and how we are able to see it. We learned about how we see light with our eyes, and how cameras make photos with a similar process. We also learned about lenses and the visible spectrum and many other things having to do with vision. I’m most proud of the science parts I learned in this class since it isn’t my strong suit.

For our action project we made pinhole cameras. A pinhole camera is pretty simple: you choose an object, such as a shoe box, that is completely black on the inside, and cut a hole in it. You then place a sanded down piece of tin with a tiny hole poked in it that acts as a lens. The light will shine through that lens when you uncover it, and when there is photo-sensitive paper inside, it will a picture will appear based on the light that comes through the lens.

AG Inside Pinhole Camera (2015)

AG Pinhole Camera (2015)

The math concept we used for this project was similar triangles.

x^2+y^2=z^2                             a^2+b^2=c^2                             

1 15/16^2+11 1/2^2 = 136^2     4 3/4^2+16 43/62^2 = 302.24^2

   z = 11.66                                   c =17.36                                     

The height of my pinhole is x which equals 1 15/16 inches

The distance from the lens to my paper is y which equals 11 ½ inches
The height of my subject is a which equals 4 ¾ inches
The distance from the back of my camera to my object is b+y which equals 28 6/31 inches
The distance from the lens to my object is b which equals 16 43/62 inches

The shutter speed that I tried the first time was 2 minutes and the second time was 4 minutes. Unfortunately the pictures didn’t show up because the pinhole wasn’t the right size, it was a little too small so the light didn’t come through enough. If I were to get a chance to redo the project I would make sure to fix that mistake.

JS Pinhole (2015)

This project shows the relationship between light and energy because when the light makes touches the paper it causes it to change color, which shows that is transferred its energy to it. I didn’t however think that the camera illustrated the idea of refraction because there wasn’t anything like water that would slow down the light, there was only air. Refraction involves light slowing down and bending so if that didn’t happen, refraction wasn’t shown.

As an addition we got to make photograms.This also involves using light sensitive paper, however you don’t use the camera and the pictures show up differently.

AG Photogram (2015)