| 21. | The lens was designed to improve the image projected by the camera obscura.
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| 22. | R . Levi developed tools for these measurements, essentially pinholes and the camera obscura.
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| 23. | Her work has been featured in such publications as Film Comment and Camera Obscura.
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| 24. | Part of his installation will include a homemade camera obscura with a hand-ground lens.
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| 25. | The museum also has the world's oldest working Camera Obscura.
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| 26. | They create camera obscura exact drawings using an easel with they devised and built.
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| 27. | "Because he has traced them " from " images created in a camera obscura,"
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| 28. | In 1829 he replaced the telescope with a camera obscura.
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| 29. | :Camera obscura presents a view of outside onto the interior walls of a room.
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| 30. | The portable camera obscura box with a lens was developed in the 17th century.
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