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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.
Wiki User
∙ 11y ago
Wiki User
∙ 13y agoIt depends upon the type of lens. Some are long and some are short. Others are variable such as a zoom lens.
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Will lens from N4004 fit D70 camera?
Yes. Nikon cameras have the distinct advantage over other cameras because they are backwards compatible with any Nikon lens. In short, any Nikon camera can mount any Nikon lens. The problem is how much of the lens capabilities are retained when used on a different camera. Depending on the lens' mounting system and the Nikon camera, the lens may or may not be able to autofocus or meter. Also, if you use an FX lens (from a film or D3/D700 camera) on a DX (digital DSLR) camera, the focal lengths will be different than on the film camera. More specifically, it will be 1.5 times the focal length of the film camera. (more zoomed in)
A short write-up on photography?
When writing your write-up include the main points about photography. You could mention the invention of the camera and how it developed. You could also write about how a camera works. You could describe what happens when you take a picture.
How does the flash of a camera affect animals?
It mostly scares them for a short while. When i use a Video Camera with 'Flash always on' she just squints and looks away.
How does the resolution of a 2.4 megapixal digital camera compare with a disposable camera?
Generally speaking, film has a much better resolution than digital cameras. In fact, if you were to compare good 35mm color film to the "megapixel" rating of digital cameras, film would rate in the area of 24 megapixels. The problem is not with the resolution of the storage media (digital vs. film), but rather the abilities of the cameras themselves. A disposable camera is going to have a disposable lens in it. Lenses have a very big impact on the quality of your photos. So, in short, the disposable camera might have a better resolution, but the digital camera will likely have sharper pictures. The operative word here is disposable. Most of the 'disposables' on the market would be better if they were disposed of before taking pictures.
How do lasers interfere with a surveillance camera?
I assume you mean if someone points a laser pointer directly at a camera. Several things can happen. The small point of high intensity light can saturate the CCD elements at that location, and even spill over into adjacent pixels (called blooming). An analogy: If you touch a pen to a piece of paper, it just makes a dot. But if you dump the entire cartridge at that point, it spreads and covers the area. Auto gain/white balance may cause further distortion as the camera tries to adjust to the new brightness level. Generally, this effect is short-lived: the CCD refreshes, and the over saturated cells empty and it returns to normal. However, a more powerful laser pointer could potentially cause permanent damage to the camera, literally burning the camera sensor.
What is the meaning of telephoto?
Telephotographic; specif., designating a lens consisting of a combination of lenses specially designed to give a large image of a distant object in a camera of relatively short focal length.
What is a sentence with the word focal?
Wide-angle lenses have a short focal length. The focal character of my short story is a ten-year-old boy.
What uses a long focal length a short focal length lens and has an inverted image?
a camera? Or an eye? Something like that. Weird question
How many zoom lenses should I buy to take high quality travel photos with my digital camera?
The short answer is two. Purchase one versatile zoom which will cover a range of focal lengths. Your second lens should be a small, lightweight prime lens.
What is a wide angle focal length lens?
On a digital SLR camera, anything less than about 32 mm (50 mm for a 35 mm film camera). The focal length of a wide angle lens varies depending on the size of the negative or digital sensor. Most camera manuals for smaller cameras will give you an idea for that camera, often in 35 mm equivalents, so use the 50 mm standard for those.
What is focal length of a door peephole's lens and is it concave or convex?
The lens in a door peephole is a convex lens with a very short focal length, giving it a wide field of view. If it were on a camera, it would be called a "Fisheye lens".
When light rays enter the eyes of fair sighted people they fall short of the retina?
When a person is near or far sighted, the focal point of the light entering the eye does fall either short of or behind the retina. This is due to improper alignment ot the lens at the front of the eye. Corrective lenses correct this by changing the focal length of the light within the eye.
Why are Fresnel lenses useful for navigation in water?
This may or may not answer your actual question; the wording is a little ambiguous. Fresnel originally developed the lens style named after him for use in lighthouses. The lenses used in lighthouses needed to be very large and have a short focal length, but short focal length lenses need to be highly curved. That combination means that in a plano-convex lens, the middle is much thicker than the edges, and not only does the lens require a lot of (expensive) glass, it's heavy and has thin fragile edges. The lens Fresnel designed overcame these problems, and so made it possible to for lighthouses to have extremely large and powerful lenses that previously would have been impractical.
If a telescope has an objective lens of 3 inches what is the focal length?
The size (diameter) of a lens does not determine its focal length. The amount of curvature of the lens does. Citing a diameter for a lens doesn't help us find the focal length. Lenses are ground to specifications that allow short or long focal length. The more curved the lens, the shorter the focal length. You can see this if we specify a given curvature and then start to "flatten" the lens. The focal length will get longer and longer as the lens is flattened. When the lens is flat (has to curvature) the lense has an infinite focal length, just like a piece of flat glass.
Will lens from N4004 fit D70 camera?
Yes. Nikon cameras have the distinct advantage over other cameras because they are backwards compatible with any Nikon lens. In short, any Nikon camera can mount any Nikon lens. The problem is how much of the lens capabilities are retained when used on a different camera. Depending on the lens' mounting system and the Nikon camera, the lens may or may not be able to autofocus or meter. Also, if you use an FX lens (from a film or D3/D700 camera) on a DX (digital DSLR) camera, the focal lengths will be different than on the film camera. More specifically, it will be 1.5 times the focal length of the film camera. (more zoomed in)
For a research telescope (with a long focal length) would the thickness be greater or less than for a backyard telescope (with a short focal length)?
Technically the shorter the focal length, the thicker the mirror. But some short focal length telescopes have relatively thin mirrors all the same.
Will chinon slr lenses fit digital camera?
Chinon lenses are either M42, 'Pentax screw.' which can fit any digital body with the relevant adapter, or Pentax K bayonet which will fit Pentax or (most) Samsung SLRs. NB they will only meter stopped down to the taking aperture, and offer neither autofocus nor shutter priority/programmed modes. There is also the fact that film SLR lenses need longer focal lengths than their digital cousins due to the sensor being smaller, thus a 50mm standard lens for film is a short telephoto for digital.
