Pinhole

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Pinhole

  1. 1. How fast does light travel? • Light travels in a straight line. It does not naturally bend around corners. • It travels at about 186,000 miles per second in air and space. • Compare this with sound, which travels only about 1,100 feet per second.
  2. 2. The first recorded discovery of the pinhole phenomena occurred 500 years B.C. occurred 500 years B.C. occurred 500 years B.C. • It was the Chinese philosopher Mo-Ti, who first described the optical phenomenon he called a "collecting place” or “locked treasure room."Light passing through a tiny hole in the wall of a darkened room would cast a full-color, upside-down image of what was outside on the opposite wall. • By the 17th century this principle had evolved and been named the camera obscura.
  3. 3. • Aristotle (384-322 BC) understood the optical principle of the camera obscura. He viewed the crescent shape of a partially eclipsed sun projected on the ground through the holes in a strainer, and the gaps between leaves of a plane tree.
  4. 4. Camera Obscura, Gemma Frisius, 1558
  5. 5. Lens Based Camera Obscura, 1568
  6. 6. Contemporary artist Abelardo Morrell. A random small hole in one of those windows turned one room into a camera obscura.
  7. 7. • Because light travels in straight lines, the light from the top of the object travels down through the opening toward the bottom of the wall. Light from the bottom of the object travels upward through the opening and is projected toward the top of the wall.This results in the displayed image being inverted, or "upside down".
  8. 8. The Law of Optics occurs naturally in the world
  9. 9. Camera Focal length
  10. 10. Characteristics of pinhole cameras • Pinhole images are softer – less sharp – than pictures made with a lens.The images have nearly infinite depth of field.
  11. 11. http://chriskeeney.com/blog/2010/02/ralph-howell-february –-featured-pinhole-photographer
  12. 12. Extra Strong Segafredo Coffee, Pinhole Photograph
  13. 13. • Self-Portrait • Ghost (not full exposure) • Double-Exposure (MOVE camera) • Home • Scale Trick
  14. 14. Anne Frank, 11"x14" Silver Gelatin print, from anamorph camera, 2000 http://www.pinholeresource.com/shop/gallery
  15. 15. http://nancyspencerphoto.com/home.html

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