Experimental Procedure

Purpose: Does using a lens affect the qualityof a photograph when using a pin-hole camera?

Hypotheis: The pin-hole camera with only the film inside will work best.


rubber gloves

razor blade


1 cow eye

4 Quaker oat cans

black spray paint can

Black electrician's tape

masking tape

4 2" by 2" Aluminum Foil squares

#10 sewing needle

25 sheet pack of "Ilford" 8" by 10", grade 3 glossy enlarging paper

3 1" by 1" transparen plastic boxes

1 red light bulb

1 32 oz. "Clayton" bottle of photogragh developer

1 32 oz. "Clayton" bottle of photograph rapid fixer

4 developing bins

4 pairs of tongs

clothesline and clothespins

1 bottle of Bausch and Lomb's Saline solution

1 Glue Gun and 2 sticks of glue

6 inch in diameter White Plate with a Stand

Oral-B Toothbrush

1 compass

1 Silver paint pen




Assembling the Camera:

1. Purchase 4 Quaker Oatmeal cans, all of the same size.

2. Get rid of all the oatmeal in side the can.

3. Clean the insde, but do not use water.

4. Use the black spray paint can and put 3 coats of sapray paint on each can and lid, making sure that the can and lid are completely opaque.

5. Let them dry for at least 6 hours.

6. Use a compass to draw a circle with a 1 inch diameter 5 inches from the bottom of the can.

7. Use a razor blade and carefully cut the circle out.

8. Cover the circle form the outside of the can by taping an aluminum foil square over it.

9. Insert the #10 sewing needle half way into the aluminum foil as close to the center of the cut out square as possible.

10. Slowly turn the needle clockwise.

11. Gently pull the needle out.

12. Repeat the process with all of the cameras.

13. On the outside of the camera, label them from 1-4 with the silver paint pen.


Dissecting the cow eye:

1. Using a razor blade, cut a hole about one inch behind the pupil (the colored circle) of the cow's eye.

2. Once the hole is pierced, continue tocut awau from the pupil.

3. Cut about half way around the eye and stop.

4. Carefully stick a finger into the hole of the eye.

5. Serch for a clear M&M faped figure; this is the lens.

6. Be carefull because the lens may explode if not held gently.

7. Get rid of all the tissues attatched to the lens.

8. Place the lens in one of the plastic boxes

9. Fill a small bowl with saline solution.

10. Put the box with the lens in the solution and shut it.

11. Make sure that the box is completely shut.

12. Hold the box tight and dry the box.

13. Use the hot glue gun to glue the box shut.

14. Fill another box with saline solution.

15. While holding it tightly, dry the outside of the box.

16. Glue the box shut.

How to glue the Boxes onto the camera

1. Take the empty box and use a glue gun to glue the sides of one face of the box.

2. Quickly place the box in the inside of the camera #2 directly over the cutout circle.

3. Repeat this process for cameras #3 and #4.

Setting up the darkroom

1. Find a room in the house with few or no windows.

2. Cover the windows, if there are any, with a thick black tarp.

3. Tape it up.

4. Use the black tarp and tape to cover all the cracks in the doors.

5. Screw in the red light bulb somewhere other thatn where the white is.

6. Turn off all the lights in the room, except the red light and make sure that no light comes through.

7. Set up a working area with the four bins in this order from left to right

Developer, water, rapid fixer, and water again.

8. Set up a clothesline with 8 clothespins.

Loading the Camrea

1. In the darkroom, with only the safelight on, remove the enlarigng paper from the envelope.

2. Cut the paper in half and trim an inch and a half off of the top so that it fits in the camera.

3. Place it in one of the cameras so that the glossy side faces the pin-hole.

4. Put the lid on the camera tightly.

5. Cut an inch and a half piece of electrician's tape.

6. Fold one end of the tape over to create a flap.

7. Place the tape tightly over the pin-hole. This is the shutter.

8. Repeat this process for all of the cameras.

Taking a Picture

1. Take the four cameras outside on an 87 degrees sunny day.

2. Place them on a side walk with the backs of the cameras facing the sun.

3. Set up a display 6 feet away form the cameras.

4. In this experiment, a plate 6 incehs in diameter on stand holding a toothbrush was used. Also a 5'4" girl laying down with her face towards the camera was used.

5. Have your watch ready, and remove the shutters.

6. Expose the film for 30 seconds.

7. After the 30 seconds, tightly reapply the shutters over the camers. Try different exposure times to test the best amount of time to leave the cameras out.

8. Take the cameras into the darkroom.

Developing a picture

1. With only the red light on in the darkroom, uncover the #1 camera, the one with only the pin-hole.

2. Place the paper, glossy side faced up, in the developer.

3. Using the tongs,gently move the picture around for 60-90 seconds.

4. When an image appears, tilt it so that the chemicals drip off of the paper.

5. Place it in the water and rinse it for 15 seconds.

6. Place the paper in the rapid fixer and gently move it for 30 seconds.

7. With the tongs, tilt the picture so that the chemicals drip off of it.

8. Place it in the other bin of water and rinse for 15 seconds.

9. Use the tongs to remove the picture from the water.

10. Use a clothespin to attach the photograph to the clothesline to let it dry.

11. This is the negative of the photograph.

12. Repeat the process with the other the other photographs.

13. Make sure to keep track of which pictures are being developed. Keep track of what was used in the camera.

14. Take more pictures to make sure that the first set was done correctly.