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If you look through the lens at a distant point, the point image will not move when the lens is rotated slightly about a vertical or horizontal axis the goes through the nodal point. This is called the optical center.
With a thin lens this is close to the geometric center, with a longer complex lens the optical center is buried somewhere inside. The optcial center of a complex lens may or may not be inside an element.
Wiki User
∙ 12y ago
Wiki User
∙ 16y agoIn my experience, generally I known optical center of the lens is the thinnest point of minus lens or the thickest point of plus lens. And in that point (optical center) we can see directly through the lens without any distortion, if the power (dioptry) of lens is correct for your eye. Also we can find it (optical center) by used lensmeter.
Wiki User
∙ 11y agoouter edge of the lens
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What is the optical zoom on the lumix g10 camera?
It depends on the lens one has on it at the time. The lens is interchangeable.
How much distance a 28mm lens with 10x optical zoom will cover?
300m
Is optical center is same as the geometric center of a lens?
no it is same
Does the Kodak c875 camera have a glass lens?
Yes. 5X SCHNEIDER-KREUZNACH VARIOGON Optical Zoom Lens
Why more optical zoom cameras required?
Optical zoom cameras are used to take a shot in which a far-away object appears both prominently and clearly. Essentially you need a decent zoom lens to obtain this ability, and a good camera with a widely-adjustable lens offers this feature.
What is the maximum optical zoom of Canon EOS 1000D?
That depends on the lens you put on the camera.
What is the center point of lens called?
axis or optical center
What is the optical zoom of the Sony dslr a33?
That depends on the lens that is mounted on the Sony A33 DSLR.
What is better digital zoom or optical zoom?
Optical Zoom is the true zoom, Digital is basically the zoom in of what the highest optical zoom is. Therefore Optical Zoom is the better zoom, and gives a much clearer picture.
Is 24X zoom better than 200X on camcorders?
There are two types of zoom, optical and digital. Optical zoom is the actual capability of the lens itself. Digital zoom is what the computer in the camcorder does above and beyond the limit of the lens. If you've ever taken a low-resolution photo and blown it up much larger than the original size, you know what happens. The pixels get bigger, and bigger, and bigger until all you see is a patchwork of squares. That's what digital zoom does, it just enlarges the image that the lens captures, so quality degrades the further you go into the optical zoom range. When you zoom in on an object and the zoom seems to hesitate, or you have to press the button again you know that you are then switching to digital zoom and have maxed out the actual capability of your optical zoom. So, to answer your question, 200x is not always better than 24x zoom, unless of course it's all optical zoom, not digital, which is very rare unless you have a very high-dollar camcorder with inter-changeable lenses.
What is manual zoom?
It is exactly what it sounds like. You zoom in on your subject by using the lens (normally it is attached to the camera itself and can be taken off). You control how far, how much, and where. Usually, optical zoom is used with manual zoom.
What is the Difference between optical zoom and dynamic zoom?
ofcourse optical zoom..................
