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Where must the film be placed if a camera lens is to make a sharp image of an object far away?
Wiki User
∙ 9y ago
This varies widely depending on the camera. If you're talking a throw-away camera with a single element lens, an inch or so. If you're talking a large format portrait camera (film plate 4 x 5) the lens can be a foot away or more.
Exactly ! SLRs have the lens moved forward to allow the reflex mirror free passage (25-30mm for 35mm film) whereas my rangefinder has less than 3mm clearance between the wideangle lens' rear element and the focal plane shutter.
Wiki User
∙ 12y ago
Wiki User
∙ 14y agoI read about that once. Let's see if I can remember it:
The so-called "lensmaker's formula" for the distances involved with a lens is:
1/o + 1/i = 1/f
o = the distance of the object from the lens
i = the distance of the image from the lens
f = the focal length of the lens
When the object is very distant, 1/o goes to zero, and the formula is
1/i = 1/f
or
i = f
We've made the brilliant and exciting discovery that for objects at infinity (incoming rays parallel),
the image forms at the focal length !
Wiki User
∙ 9y agoat the focal length of the lens
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When would a photographer use a telephoto lens for her camera?
to capture an image from afar,thereby making it be full visible
How can the image in a pinhole camera be made bigger?
a pinhole camera has a very small aperture for the light to pass through. Thus the sharp focus distance is very great too. You will get a bigger image if you move your paper or whatever the image lands on, further away from the pinhole.it may not be as bright, though
Is the Sharp corporation camera model ve-cg3ou a good camera?
Yes, it seems a nice camera
Why should a camera be move from the object in order to obtain a sharp image?
I believe you are talking about minimum focusing distance. If your subjet is too close to the camera, then the lens may not be able to completel focus on it. Diferent lenses have different focal lenghts. Some Wide angle lens can work at 20 to 25 inches, while some larger zoom lenses need more than 3 feet of minimum focusing distance... If you are using a compact camera, then you could try using the macro mode to work really close to the subject you are trying to shoot.
Why do cameras need lenses?
because It is more than just because. The one taking the photo need make sure they have just the shot the want. It bring it in to focus. Pulling it closer, a wider angle. Hope that helps you a little.
What is the most important feature of a camera security system?
That the camera gets a sharp image in the light it will be recording in.
Why do cathode rays produce sharp shadow of object placed in their path?
they are material particles!
What is the lens of the eyes?
the lens is what the eye uses to focus an image on the retina.function of the eye lense is is to adjust the focal length of the eye so it can make a real and sharp image of object
How can you get a sharp image?
It can be up to 100% sharp.
What is the purpose of lenses on a camera?
The lens performs two main functions; it controls how much light enters the camera by changing the aperture. The aperture is a variable sized "hole". With a smaller aperture, less light enters the camera and also more of the image will be focus. The other major function is to bring objects into sharp focus onto the focal plane of the camera (where the sensor or film is).
When would a photographer use a telephoto lens for her camera?
to capture an image from afar,thereby making it be full visible
Is it true that The lens of a nearsighted person forms a sharp image of a distant object in a position in front of the retina instead of on the retina?
Por supuesto!
What is the difference in camera and in human eye in the method of focusing?
In a camera, the lens is fixed - focusing is done by moving the lens forward or backward to get a sharp image. In the human eye, muscles surrounding the eyeball 'distort' the lens to change its focal length.
How can the image in a pinhole camera be made bigger?
a pinhole camera has a very small aperture for the light to pass through. Thus the sharp focus distance is very great too. You will get a bigger image if you move your paper or whatever the image lands on, further away from the pinhole.it may not be as bright, though
Is the Sharp corporation camera model ve-cg3ou a good camera?
Yes, it seems a nice camera
Why is a pinhole cameras image sharp and dim?
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 :)
What is important about sharp object safety?
Sharp/pointed object safety is important because sharp things without care can cause injury.
