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In a pinhole camera, the size of the hole has the same effect as the aperture setting on a more traditional camera. The size of the hole, combined with its distance from the film or sensor, controls the depth of field of the image and the length of exposure needed. Smaller holes will result in greater depth of field (to a point) and longer exposure.
To compare a pinhole camera to a traditional camera, the distance from the film to the pinhole gives you the focal length, the size of the pinhole divided by the distance to the film gives you the effective aperture which can be used to determine the exposure needed.
The reason that I included the "to a point" when discussing depth of field is that the pinhole must be in a very thin material and should be blackened in order to limit loss of sharpness due to diffraction. Diffraction also contributors to a loss of sharpness in traditional lenses when stopped down past f16 or so.
What else can I help you with?
Pinhole camera and human eye similarities?
I think a pinhole camera is similar to the human eye because like the pinhole camera when it sees something it reflects the image but it is an inverted image. With the human eye the brain corrects it and turns it the right way up. The pinhole cameras image is not corrected because it does not have a lens.
Does a Pinhole camera reverse the image as well as invert it?
No
Image formed by a pinhole camera?
Pin holiday camera light travels in straight lines
How does a pinhole camera work to capture images?
A pinhole camera works by allowing light to pass through a small hole (the pinhole) and project an inverted image onto a surface inside the camera. The image is then captured by the surface, such as film or a digital sensor, creating a photograph.
Why the image formed on the screen of the pinhole camera is inverted?
The image formed on the screen of the pinhole camera is inverted because the aperture, which is a small hole, bends the light that enters the camera. This basically shows that light travels in straight line.
What will happen to pinhole camera if the object distance is equal to image distance?
the image distance will appear the same
When you made the pinhole camera what way up was the image?
It would be upside down
Why can not we see upside down image of the sun?
You can - use a pinhole camera ( or viewer).
How can an image through a pinhole camera be made sharper?
Make the hole smaller.
Is the image on the screen of a pinhole camera back to front?
Yes, the image on the screen of a pinhole camera is upside down because of the way light passes through the small aperture and projects onto the film or sensor inside the camera. It is a characteristic of pinhole cameras due to the nature of how light travels through a small hole.
How does a pinhole camera work to capture images without the use of a lens?
A pinhole camera works by allowing light to pass through a small hole (the pinhole) and onto a light-sensitive surface inside the camera. The pinhole acts like a lens, focusing the light to create an image. The image is then captured on the surface, such as film or a digital sensor, without the need for a traditional lens.
What are the characteristics of images in a pinhole camera?
The image will be formed upside-down and reversed horizontally on the back of the inside of the camera.
