Aug 7, 2010

Types of Lenses


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  • Wide Angle lens
  • Fisheye lens
  • Prime lens
  • Zoom lens
  • Telephoto lens
  • Macro lens
-  Wide Angle Lens
In photography and cinematography, a wide-angle lens refers to a lens whose focal length is substantially shorter than the focal length of a normal lens for the image size produced by the camera, whether this is dictated by the dimensions of the image frame at the film plane for film cameras or dimensions of the photo sensor for digital cameras


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- Fish Eye Lens

In Photography or Cinematography, a Fish eye lens is nothing but extreme wide angle lens gives wide area and almost covers almost 180 degree. For Natural or Broad landscape are easily captured in fish eye lens and also the lens distortion is much popular in photography. Its other name called “Whole Sky Lens" which specially developed for Meteorology studies and study of Cloud Formation in sky.
 
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- Prime Lens 
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In photography and film, a prime lens have single focal length or Fixed focal length. For example: Zoom lenses have various focal length (18mm - 55mm) but in prime lenses are have only one focal length (50mm).
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- Zoom Lens

A Zoom lens have a various "Focal length"(18mm-55mm) or various "Angle of View". It's commonly used in video camera, Microscopes and telescopes. It's other than called as "Varifocal Lens". Digital Zooming is entirely different from optical Zooming.

 
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- Tele Photo Lens
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A Telephoto lens is specially designed for Long Focal Length. The physical length of the lens is lesser then the Focal length and Entire lens assembly is between the optical center and the focal plane. It's Specially used for Wild Life Photography or to captured the distance object.

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- Macro Lens
  Macro lenses are specially designed for extreme closeup Shoot. These type of lenses are easy and flexible for nature shooting such as small flowers, insects, tiny materials, as well as for many technical applications.

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Types of Camera



  • Pinhole Camera
  • Box Camera
  • Twin Lens Reflex Camera (TLR)
  • Single Lens Reflex (SLR)
  • Disposable Camera
  • Digital Camera


Pinhole Camera
Pinhole cameras are effectively constructed with light proof box with one side small hole which allows the light into the box. Pinhole camera has only one aperture.



Solargraphy is one of the types in Photography which capture the movement of sun for a long time period. Principle of pinhole camera is Light rays from an object pass through a small hole to form an image.



Box Camera


The Box Camera is one of the easiest forms which construct in cardboard or plastic box. Lens is fixed in one side and another side film is placed. Its free focus lens and lack of aperture control. It’s suitable for daylight photography..




Kodak introduced in 1888, the first commercially successful box camera for roll film -- the advertising slogan being You press the button – we do the rest.

 Twin Lens Reflector Camera (TLR)
A Twin Lens Reflector cameras are constructed with two objective lens and Focal length are same for both lenses. Lowered lens which capture the objective image and other one is used as Viewfinder. The viewfinder lens consists 45 degree mirror is fixed inside the camera which helps to view the image. 


Parallax Error will occur in this camera. The image seen in the viewfinder which slide lowered in picture.

 Single Lens Reflex Camera

A Single Lens Reflex camera builds with single lens with the help of Semi-automatic moving mirror system in the camera body. A mirror placed with 45 degree slant which passes image from lens to view finder while capturing image mirror moves upward and allows light into film. 

 
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