CS 194-26 Project 2: Building a Pinhole Camera

Nanxi Wang cs194-26-agu, Emily Chang cs194-26-aeu

Project Overview

To build our pinhole camera, we used a cardboard box about the size of a shoebox. On the inside, we covered the sides of the box with black felt.

On the inside, we covered the sides of the box with black felt. Our box was fairly old, so most corners leaked light. To address this, we used black duct tape to cover the corners. Once our pinhole camera was finished, this was our result:

The camera we used was a One Plus, which had neat features including adjusting shutter speed up to 30 seconds and also adjusting the ISO.

First Attempt

When we first tried our pinhole camera, our camera leaked rays of light because the hole for the camera was not perfectly shaped. We resolved this by duct taping the edges near the camera lens to the box, but previously our photos had rays of light coming from the top.

We then tried our pinhole camera on different pinhole sizes. Each time we increased the hole size, we halved the exposure time to account for more light entering in a shorter span of time. These were our results.

Image Set 1

1 mm

3 mm

5 mm

Image Set 2

1 mm

3 mm

5 mm

From our photos, we noticed as our pinhole size increased, the photos became blurrier. The sharpest photos came from the 1mm pinhole size, and as expected the 5mm photos were the blurriest.

Additional Images

Image 1

Here we see a ghosting effect because multiple people walked along the path as we were capturing the photo

Image 2

Image 3

Image 4

Bells and Whistles: Light Painting

We also tried light painting by holding a long exposure time and moving light around during the exposure period. This was done in the late afternoon, so the light coming from the flashlight was less apparent, resulting in a fainter light paint.

These were our results: