How to make a 2 Pinhole Camera
Make the Camera
Assemble the materials.
Mark the centre of the lid.
Mark the centre of one side.
Use your finger as a guide to trace a circle in the centre of the lid and side.
Cut out the circles.
Mark the centre of each number plate.
Wrap the blunt end of the needle in tape for added grip.
Slowly bore a hole through the centre of each number plate.
Stop when only the tip of the needle has gone through.
Remove the protective backing from the number plates, around the pinholes.
Gently sand both sides of the pinholes.
Calculate the f-stop
To determine the diameter of each pinhole and calculate the exposure time, and scan it using the highest optical resolution of the scanner (1200 dpi).
Using Adobe Photoshop imaging software, enlarge the image as much as possible (200%-300%).
In Photoshop, measure the diameter of the pinhole directly on the screen. Multiply the D1: (diameter) number by the distance from the pinhole to the photographic paper. Make sure both numbers are in metric or imperial. This is the f-stop.
Load the Camera
Remove the protective backing from the number plates.
Stick the number plates to the tin, centering them over the holes.
Tape the number plates into place.
Make a shutter for each pinhole out of tape, leaving a tab.
Working in a well-ventilated area, spray paint the inside of the tin and lid.
Work in safe light conditions.
Remove the photographic paper from the package.
Cut the photographic paper to fit the bottom (or side) of the tin. Load and expose only one piece of paper at a time.
Tape the photographic paper in place.
Seal the tin with tape.
Use the Camera
Position the camera in front of the scene to be photographed. Peel back the tape shutter for the required exposure time.
Develop the exposed photographic paper in the darkroom. Contact print the paper negative in the enlarger. Develop the print.
Negative taken with the pinhole in the lid of the tin.
Positive
Negative taken with the pinhole in the side of the tin.
Positive
BRAVO!
Make the Camera