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We're going to assume that you mean "focal lengths".
Camera lenses don't typically have very long focal lengths. The lenses with very
long focal lengths are the ones you see that look like a big tapered piece of pipe
sticking out on the front of the camera. Those are the extreme 'telephoto' lenses ...
designed to blow up magnify (sorry) small objects in the distance. It's nearly impossible
to hand-hold the camera steady enough with such a lens, and you almost always see
them used with the camera mounted on a tripod for stability.
Here's a somewhat-related fascinating and useful factoid:
One focal length on the film = one radian (57.3 degrees) in the scene
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Does camera lenses have long or short focal points?
The short focal length of a camera lens is so that the image the lens forms is small and can be focused on a piece of light-sensitive film.
What is the meaning of focal length in camera?
The focal length of a camera's lens refers to the the magnification or telephoto power of the lens and is expressed in the millimeters of the lens, like 100mm, 300mm, etc. www.goldprints.com
The depth of field in a photograph is controlled by the?
Depth of field on a camera is controlled by the aperture. The aperture is basically the size of the opening in the lens. A large aperture (or opening) creates a shallower depth of field and a small aperture creates a greater depth of field. Aperture, along with shutter speed, determine how much light goes into the camera. The size of the aperture is indicated by the f/stop number. The numbers usually range from about f/1 to around f/64. The smaller the number is, the larger the aperture is and the shallower the depth of field, meaning less space is in focus.Additional AnswerDepth of field is also affected by the focal length of your camera's lens. For any given aperture, longer focal length lenses (telephoto lenses) have a much narrower depth of field than a standard lens, and shorter focal length lenses (wide-angle lenses) have a much wider depth of field than a standard lens.
What does 55mm camera mean?
The question likely pertains to 55mm as a lens focal length, and does not relate to any type of camera. Another use for numbers like 55mm in connection with a lens is to designate the thread size of the filters and lens caps that lenses require. For the interchangeable lenses used on 35mm SLR cameras, those sizes commonly run from 49mm to 72mm. Cameras are designated by film size or by type. Some common camera designations are 35mm; SLR; rangefinder; digital; point-and-shoot; medium format; view camera; press camera (various types); TLR twin lens reflex) -- there are others. If there is a "55mm"camera, I haven't encountered it.
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.
Do camera lenses have long focal points?
no dip sherlock
Which focal lenses make the best Samsung digital camera?
18-55mm focal lenses are very good lenses for the Samsung digital camera. Other good lenses for the Samsung digital camera are the 28-90mm and 35mm focal lenses.
Do cameras typically have very long focal points?
We're going to assume that you mean "focal lengths".Camera lenses don't typically have very long focal lengths. The lenses with verylong focal lengths are the ones you see that look like a big tapered piece of pipesticking out on the front of the camera. Those are the extreme 'telephoto' lenses ...designed to blow up magnify (sorry) small objects in the distance. It's nearly impossibleto hand-hold the camera steady enough with such a lens, and you almost always seethem used with the camera mounted on a tripod for stability.Here's a somewhat-related fascinating and useful factoid:One focal length on the film = one radian (57.3 degrees) in the scene
Does camera lenses have long or short focal points?
The short focal length of a camera lens is so that the image the lens forms is small and can be focused on a piece of light-sensitive film.
What is zoom lens?
A zoom lens is a lens of a camera which contains a mechanical assembly of inner lenses, which allow the focal length of the camera to be rapidly altered.
What does 75 -300 mm mean in relation to camera lenses?
This is a Zoom lens with a focal length of between 75 and 300 mm.
What kind of lens has a focal point?
Convex lenses have a focal point.
What is the meaning of focal length in camera?
The focal length of a camera's lens refers to the the magnification or telephoto power of the lens and is expressed in the millimeters of the lens, like 100mm, 300mm, etc. www.goldprints.com
What are the types of lenses?
There are two types of lenses - fixed focal and zoom lenses.
How do you find the power of lenses using focal lengths?
Power (F)= 1/focal length (f) focal length f, is measured in meters the power, F, is in dioptres (D) In converging or convex lenses the power is positive In diverging or concave lenses, the power is negative :)
What is parafocal?
parafocal lenses are zoom lenses that preserve the focal plane for every magnification factor.
What would lenses for a 120film camera equate to in the 35mm film lens standard?
The focal length would roughly double. For example, if you have a 60mm lens for a Hasselblad, and managed to hack it to fit a 35mm camera, that same 60mm lens would be roughly 120mm in a 35mm camera.
