Dutch Pinhole Ring
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Introduction or primer...
I like to imagine that the pinhole camera was the third imaging system invented. First was the window,
which is perhaps half-a-million years old and was invented for looking through walls. (This is the origin of
the old joke, "Did you hear of the person who invented a device for looking through walls?' "No, what is it
called?"...) The plane mirror was, I assume, invented just after the beginning of the bronze age, about
6000 years ago. A little reflection will show that its function was for looking at yourself. If modern practice is
anything to go by, the inventor was a teenager.
The Greeks apparently understood the principle of the pinhole camera and developed convex mirrors and
burning glasses as well. The Greeks, however, are not remembered for their ability to putter around, so the
pinhole camera waited in the wings for almost 1500 years. Alhazen (Ibn Al-Haytham), whom D.J. Lovell 1
called the greatest authority on optics in the Middle Ages, lived around + 1000 on the Gregorian calendar,
invented the pinhole camera, and explained why the image was upside down. He also studied the optics of
the eye and used the Arabic word for lentil to describe the lens of the eye. Indirectly, therefore, he gave us
the modern English word, lens, which is the Latin word for lentil.
Leonardo da Vinci may have used the pinhole camera in the 1500s for his studies of perspective. 2 Around
1600, Della Porta reinvented the pinhole camera. 3 Apparently he was the first European to publish any
information on the pinhole camera and is sometimes incorrectly credited with its invention. Della Porta's
pinhole camera was a large, dark room with a fairly sizeable hole in one wall. He may have coined the term
camera obscura, which is Latin for dark room. Our English word camera, therefore, derives from the Latin
word for room or chamber. Della Porta also enlarged the hole and used lenses to cast a sharper, brighter
image, though he was probably not the first to use lenses in this way.
Despite its antiquity and apparent simplicity, the pinhole camera offers several advantages over lens optics, particularly when resolution is not especially important. These include
The pinhole's light-gathering ability is poor, but this is largely offset by the high sensitivity of modern films and television cameras. In addition, pinholes can be used in the ultraviolet and x-ray regions of the spectrum when reflecting or refracting materials are not readily available.
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PTG MODEL I Pinhole Camera
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Hal Pinhole from Barcelona

![]() PTG Model I | ![]() Hal Pinhole |
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Of course we grabbed the opportunity to post an Image.
So this was our entry, click on the thumbnail to see a larger Image Selfportrait taken by Christien Jaspars at John D's place after ample instructions...! Polaroid Type 56 Sepia exposure 16 sec f512 Camera used: PTG Model I
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