A pinhole camera is a camera without a lens. They are commonly built of lightproof boxes and feature a small or large aperture hole. Light passes through the hole and projects an inverted image on the back wall (usually containing a piece of photographic paper) of the light box.
Camera Size
A pinhole camera can be as small as a tin can or as large as a room. The camera must be large enough to accommodate the photographic paper being used. A larger camera requires larger photo paper, which can be expensive. Because of this most hobbyists use smaller reusable homemade cameras. Large pinhole cameras are generally temporary installations designed to take a small number of photos of a specific scene before being torn down. Cameras this large generally require custom-made photo paper, usually made by hand specifically for the event.
Aperture Size
The aperture is the small hole on the camera through which light travels; the smaller the aperture, the less light that comes through. Generally, smaller pinholes produce sharper resolution.
Exposure
The aperture size also affects the time required to expose the photo paper. Pinhole cameras generally rely on the user to manually control exposure. A larger aperture requires less exposure time than a small aperture because it lets in more light. It's possible to calculate exposure time for larger and more precisely built pinhole cameras, but most amateurs just use trial and error on smaller models.
A pinhole camera is a camera without a lens. They are commonly built of lightproof boxes and feature a small or large aperture hole. Light passes through the hole and projects an inverted image on the back wall (usually containing a piece of photographic paper) of the light box.
Camera Size
A pinhole camera can be as small as a tin can or as large as a room. The camera must be large enough to accommodate the photographic paper being used. A larger camera requires larger photo paper, which can be expensive. Because of this most hobbyists use smaller reusable homemade cameras. Large pinhole cameras are generally temporary installations designed to take a small number of photos of a specific scene before being torn down. Cameras this large generally require custom-made photo paper, usually made by hand specifically for the event.
Aperture Size
The aperture is the small hole on the camera through which light travels; the smaller the aperture, the less light that comes through. Generally, smaller pinholes produce sharper resolution.
Exposure
The aperture size also affects the time required to expose the photo paper. Pinhole cameras generally rely on the user to manually control exposure. A larger aperture requires less exposure time than a small aperture because it lets in more light. It's possible to calculate exposure time for larger and more precisely built pinhole cameras, but most amateurs just use trial and error on smaller models.
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www.exploratorium.edu/sln/light_walk/camera_todo.htmlAn ordinary camera has a lens that makes an image on film. In a pinhole camera. a small hole replaces the lens. You can construct a pinhole camera using:
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www.kodak.com/.../lessonPlans/pinholeCamera/pinholeCanBox.shtmlWhen you make a pinhole camera to accept roll or sheet film, use a small, light-tight can or box as the camera body. You can use any can that has a tight-fitting top.
How to Make a Pinhole Camera eHow
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Large Format Photography resources from Photo.net
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www.instructables.com/id/How-to-locate-pinhole-camerasThe method for locating pinhole cameras is the same as the method for locating field spiders. All you need is a source of light like a flashlight and ...
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Checklist - Video Security Cameras, CCTV Systems & Network
www.cctvconsult.com/checklist.htmFree consulting homepage on CCTV equipments and cameras, including wireless cameras, CCD Cameras, CCTV monitors, time lapse VCR, network camera servers
1/3 Sharp Color CCD Day and Night Motion Detector Type Pinhole ...
www.tmart.com/Day-and-Night-Motion-Detector-Type-Pinhole-Camera...Want to give your house best care and get the situation in your hands? You need this Day and Night Motion Detector Type Pinhole Camera. It is can be used at home ...
build a digital pin-hole camera - Instructables - Make, How To ...
www.instructables.com/id/build-a-digital-pin-hole-cameraI always wanted to try making pictures with a pinhole camera, but it was one of those things I never quite got around to. Now with digital cameras it ...
Corbis Readymech Cameras
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General Security Cameras - Bullet Cameras
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www.tmart.com/Hidden-CamerasTmart offers a full range of spy cameras for the security in different locations, such as home, office or shop. The concealed pinhole is convenient for you to record ...
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