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| A cardborad is used to make an inner box for the screen (made of tissue paper and/or a plastic bag) |
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| A complete camera obscura |
Summery of the building(design and difficilties)--
I choose a Pingles can because it would be convenient since it is automatically telescope-like so that I don’t need one. However I didn’t realize it would take efforts to embed the lens until I started to do it—the bottom is metal which is very hard to make a hole.
The first time I made the screen, I also didn’t notice that we were supposed to be able to move the screen backwards/forwards. After I initially finished the building, I found the image on the screen was very blurry and asked opinion from Professor Borda. She suggested me to improve the camera obscura by remake the screen so than I can move it to find a focus, which I did afterwards, and it was much better.
When I brought my camera obscura to the Loch Ness trip, I found two small flaws—first, the screen is a little bit rough because I used tissue paper, and this makes the image not that clear. Second, I neglect a small corner of the inner box—it was not smooth which makes a small shadow on the screen. When I come back, I changed the screen material (a Tesco plastic bag) and also snips the “bump” part of the inner box.
There images I took from the camera obscura:
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| XINWAN LI Urquhart Castle 18 June 2011 14:16 |
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