This blog post is about how Science can improve my art in the festival of the Arts Kete.
- I want to research the history of Obscura Camera
- How does pinhole camera or Obscura camera Work?
- I want to investigate how to make a Obscura Camera.
- I want to investigate how chemicals react with light to make a photograph.
Research:
History of Obscura Camera (Obscura Camera)
How does Obscura Camera Work (Obscura Camera)
Base on my research, Camera Obscura have taken place since very early times. The first recorded evidence of this effect was by Mo Tsu, he was a Chinese thinker in 500bc. Lenses has to have its focal length to be fixed. The brightness and clarity of image that the lens introduced made it a practical tool for artists like Vermeer and Canaletto and perhaps encouraged more experimentation. Camera is a Latin word for room or chamber and Obscura is a Latin word for dark. Camera Obscura means dark room. Putting out the camera obscura out in the landscape, rays of light reflect of objects in the landscapes and bounce of in all directions. Most of the light will be scattered, but some will make it through the opening in the camera obscura. The reflected light will be the same colour as the object in the landscape, light reflects off other objects as well. All of the spot of light combine to form an image on the back of the camera obscura. If the opening in the camera obscura is large, the rays of light are large. It makes a bright and clear projection because a lot of light is allowed in. But it can also make the picture blurry because the projections are large and overlap quite a lot.
How Chemicals react with light to make a photograph. (Pinhole Camera)
How Chemicals react with light to make a photograph. (Pinhole Camera)
Light sensitivity, of the Silver Halides, is the key to the photographic process. When light is exposed, a chemical reaction darkens the film to produce an image. Silver Halides is one of the Halogens. Silver Halides are light-sensitive chemicals, and are commonly used in photographic film and paper.
Equipment:
How to make an Obscura Camera (Obscura Camera)
- Magnifying Glass
- Baking or Tracing paper
- Cardboard or box
- Mirror
- Electric Tape
- Craft Knife
- Other design materials
- Glue gun
- Scissors
- Pencil
- Ruler
- Light bulb or lampshade
Method:
(Link to Instruction) (<----- in youtube)
1. First figure out the focal length of your magnifying glass. Using the light bulb or the lamp shade, test the focal length of a magnifying glass by testing it somewhere dark and using the light bulb. (Put the magnifying glass in front of the light bulb testing it in a wall that's dark. Test the the focal length by moving the magnifying glass forwards and backwards until you can get the right focal length. You will know the right focal length when the picture of the light bulb is clear and when its not blurry. Then using a ruler, measure starting to the wall and to the magnifying glass.)
2. Second make the side of the boxes, it includes; the top, bottom, left side, right side, front and the back side. (All sides should be cut separately).
3. Then using the glue gun, stick the bottom, the right side, the left side cardboard all together.
4. Then make two small stands (looking like a rectangle) to put on both sides of the box, also make a piece of Cardboard to put in front of your stand.
5. Glue the two small stands in the side of your box and putting it on an angle of 45 degrees angle. Put the piece of cardboard in front of your sides and going in an angle as well.
4. Glue the mirror in the piece of cardboard (The cardboard that is glued in the stands)5. You can now stick the back side cardboard onto the back of your box.
6. In the front side cardboard, make a circle hole for the magnifying glass. After that, stick the magnifying glass to the hole.
7. Glue gun the front side in the front of your box (Make sure to put the front side on the measured focal length).
8. Using the top bit of your box, cut a square which you will put for the tracing paper. After cutting a square, tape or glue the tracing paper (But I recommend to tape it because if anything goes wrong with your tracing paper you can easily get it.)
(Making that top bit)
9. Now, we have to make a small Necker cube without a top and bottom. Make the sides of the Necker cube and glue them all together (no top, no bottom).
10. Glue the top cardboard into the top of your box (Make sure that the tracing paper is above the mirror).
11. Then glue the Necker cube cardboard in the top of your tracing paper (Make sure the Necker cube cardboard is in the exact place, in top of your tracing paper, this will be your viewing screen.)
12. Then your Obscura Camera is all finish, all you need to do is to design.
Results: (Write down what I saw)
As a result, my obscura camera was successful. I was able to look at it with a clear and bright projection. Also I have learned a lot of things, I have learned how it works, its history, why is it able to reflect its light and other more things. This experiment has proven me that camera obscura actually works. Before I thought this experiment wouldn't work. Also I thought that the camera obscura has its images different to a real camera's images but after the experiment, I've proven that the camera obscura is actually like a real camera. Both obscura camera and a real camera has clear and nice quality projection.
Discussion: (Write down what happened or why/how it happened)
I have been observing and have been working hard to find out how the obscura camera works. I found out that the magnifying glass reflects the image and can make the image that is far to be larger. I have learnt that, to be able to make a clear picture using a magnifying glass, you have to discover the right focal length of the magnifying glass.
Evaluation: How did your experiment go? What was a success?
I was so satisfied by experiment or project because I didn't expect it to work, since I don't know anything about obscura camera in the first lessons. I have learnt a lot of it and now it all makes sense to me. I have been able to do it successfully and I have manged the camera obscura to work.
