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Answer
The camera lens acts just like a movie or slide projector lens, projecting a miniature image of the outside world on a tiny screen at the back of the camera. The image projected by the camera lens is circular and this projected image is quite a bit larger than the film or digital sensor. In other words, the image projected by the lens overspills. Now the outer expense of this large projected image circle is quite blurred and as well as faint. Only the center portion of the projected image is suitable for photographic purposes. It is the inter part that we record, as it is bright and sharp. This center portion is called The Circle OF Good Definition.
Cameras have internal baffles and a mask that shields the film or digital sensor from the seeing the poor outer part of the projected image circle. What is recorded on film or digital chip is just the area inside the mask. Now most cameras have a rectangular mask and the size and shape of the mask is called the âformatâ.
Years ago a square format camera was very popular. Also I want you to know that the first commercial camera sold to the public was a Kodak back in 1888. This camera was made of cardboard and came pre-loaded with film sufficient film to make 100 pictures. When the all film was used, the camera was sent back to Kodak for developing and printing. The pictures were round images printed on square white paper. This camera was sold by mail order and the developed prints and a reloaded camera was posted back. The paper wrapping was decorated with comic strip charters known as the âThe Browniesâ. The camera was known as the Brownie.
Many portrait photographers were famed making miniature oval pictures known as cameoâs. They also make large oval pictures mounted in ordinate oval frame.
The camera lens acts just like a movie or slide projector lens, projecting a miniature image of the outside world on a tiny screen at the back of the camera. The image projected by the camera lens is circular and this projected image is quite a bit larger than the film or digital sensor. In other words, the image projected by the lens overspills. Now the outer expense of this large projected image circle is quite blurred and as well as faint. Only the center portion of the projected image is suitable for photographic purposes. It is the inter part that we record, as it is bright and sharp. This center portion is called The Circle OF Good Definition.
Cameras have internal baffles and a mask that shields the film or digital sensor from the seeing the poor outer part of the projected image circle. What is recorded on film or digital chip is just the area inside the mask. Now most cameras have a rectangular mask and the size and shape of the mask is called the âformatâ.
Years ago a square format camera was very popular. Also I want you to know that the first commercial camera sold to the public was a Kodak back in 1888. This camera was made of cardboard and came pre-loaded with film sufficient film to make 100 pictures. When the all film was used, the camera was sent back to Kodak for developing and printing. The pictures were round images printed on square white paper. This camera was sold by mail order and the developed prints and a reloaded camera was posted back. The paper wrapping was decorated with comic strip charters known as the âThe Browniesâ. The camera was known as the Brownie.
Many portrait photographers were famed making miniature oval pictures known as cameoâs. They also make large oval pictures mounted in ordinate oval frame.
KODAK EKTAGRAPHIC III A SLIDE PROJECTOR HELP?
lisalovede
I bought this kodak ektagraphic III A at a yard sale but i don't know why the light doesn't come out? i mean it lights up in the inside but no light through the lens, and if you could help, that would be appreciated. and please be very specific in your explanation since i have no clue how these thing work or their parts. thank you.
Answer
I use that same projector...the problem is that you actually have to put a slide in the slot. After that, the door that covers the light will open and the light will come through. That door creates a black screen when there is not a slide in the projector. It works that way on purpose.
I use that same projector...the problem is that you actually have to put a slide in the slot. After that, the door that covers the light will open and the light will come through. That door creates a black screen when there is not a slide in the projector. It works that way on purpose.
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Title Post: Camera lens is circle, so why captured photo is rectangle?
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Thank FOr Coming TO My Blog
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