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A lens is not absolutely necessary in order to have a camera. There are devices known as pinhole cameras that are able to expose photographic film without the use of a lens. In that case, the tiny hole takes the place of the lens. However, they are impractical to use because they require very long exposures and aren't very adaptable, so they are mostly curiosities today.
The lens focuses the light on the film (or sensor). If you look at a wall opposite a window, the light that strikes it is not focused. You do not see a picture on the wall. If, however, you take a magnifying glass and hold it a few inches from the wall, you will see an upside-down image of the window and whatever is outside, projected on the wall. You have focused the light, just as a camera lens does. Essentially, no lens, no picture.
That is one reason for lenses. The other purposes are generally magnification and wide angle views, depending on how the lenses are designed. That's a subject for a textbook. You can find out more about lenses by checking out the links in the "Related Links" section below the ads.
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Does the Panasonic Lumix camera use interchangeable lens?
Lumix G Micro System cameras have interchangeable lenses. Panasonic offers a wide selection of lenses for the cameras, including such offbeat choices as the 8mm "fisheye" lens. The smaller Lumix cameras do not have interchangeable lenses.
mirrorless cameras and lenses?
mirrorless cameras
What brands of lenses will fit on Olympus DSLR cameras?
If you want to use a different lens on your Olympus camera you will have to use something to mount it with. You will not get the same results from different lenses.
Are Sony Nex lenses compatible with Sony alpha cameras?
no, the nex lenses more smaller than alpha cameras.
What cameras did they use in Harry Potter?
Pretty big ones, with good lenses I'd say
Will cannon ae1 program lenses fit the cannon rebel camera?
Unfortuntely, No you can not use the AE1 Program lenses with Canon EOS cameras. They use different types of lenses, thus the diameter, connections and mount are different.
What lenses are compatible with the canon D5 mark ll?
Any lens with EF mount to digital cameras and to cameras with APS-C sensor (smaller than full size) EF and EF-S mount lenses. To EOS film cameras FD mount lenses. To all EOS cameras, almost any lens with adapter: EF, EF-S, FD to other mount. For example EF to M42 adapter and you can use M42 lenses.
What kind of lenses do Canon cameras need?
There are many different lenses for cameras; Wide angle lenses, standard lenses, portrait lenses, telephoto lenses and more. Canon has its own brand of lenses but also Sigma y Tamron are offering compatible lenses for it, it just depends on the price and the quality you are looking for
Does a camera have 2 sets of lenses that are used to form and enlarge an image?
Some cameras will have two sets of lenses, such as ones with a telephoto lens. These use two lenses to focus on and enlarge images.
How lenses work in cameras?
It just works!
Do cameras have concave or convex lenses?
yes
Do Olympus cameras lens fit other makes of cameras?
Some Olympus camera lenses fit other cameras and some only fit Olympus cameras. They have a number of lenses that fit the micro four-thirds mounting.
