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It depends on the size of the hole in the pinhole camera.

If the hole is small, less ray light will flow through the gap. Therefore the image

will naturally be dimmer. Not only that but it is sharper as the hole is smaller, as

well.

R :)

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12y ago
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10y ago

The image from a pinhole camera can in fact be very very sharp, in theory the smaller the hole the sharper the image. Remember though that the amount of light reaching the film in the camera is less and less as the hole gets smaller and smaller. This means that either the exposure time has to be increased (greater likelihood of blurring due to motion) or that the film speed has to be increased. Faster film offers poorer resolution and makes for a grainier image.

Furthermore it is difficult to make a very small hole with sharp edges, this is important because the thinner the beam of light admitted into the camera becomes the more important the precision of the hole becomes.

Predigital photographers tended to use small apertures (stops) to get sharp pictures. Just think of Ansell Adams, who used stop 1/32 to make those amazing photographs of the American landscape.

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Q: Why is a pinhole cameras image sharp and dim?
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