"There are two main characteristics
that define different camera lenses: aperture size and focal length."
– This is the iris like opening of the camera lens that controls how much light is let in. It also controls depth of field.
– This is the distance between the front lens of a camera and the point that focuses on the film or image sensor.
Types of Lenses
There are three main types of lenses. Each of them has its own characteristics. Each of them can be used to create some very interesting effects.
– This is the stock lens that usually comes with a newly purchased camera. While it is comparatively limited, it is still easy to use and convenient for day to day photography.
Wide Angle Lens
– This lens increases the perspective of the photograph by widening the angle of view. These are commonly used for architectural and some landscape photography. The depth of field is just about infinite.
- This is a favorite of nature and sports photographers (and P.I.s). It allows the photographer to seem to be up close to the subject through the appearance of the photograph, without having to physically be that close. It also narrows the depth of field for some neat effects.
While these lenses are not as common as the ones above, they have outstanding characteristics that help produce some amazing photographs.
- You cannot get any closer than this without sticking the subject under a microscope. With these, everyday objects can seem wondrous. The depth of field is very narrow though, but that can also be used for some interesting effects.
Fisheye Lenses – Some of these have a field of view that is even greater than 180 degrees. They distort the picture in an intended wrap around fashion.
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