July 19, 2007

Lens type: Telephoto lens

This type of lens will have the angle view only 2-28 degree and very low depth of field but can show picture of object as closer even it is placed in long distance.

The focal length of these type of lens will count from the normal lens such as 85mm, 100mm, 135mm, 180mm. If it has very long focal length we will call “Super telephoto lens” such as 600mm, 800mm, 1200mm, etc. This type of lens is very suitable for the photographer who can not closely access to the objects for example, take the photo of wild animal or sport.
Telephoto can give the outstanding of your object in the picture because it can reduce the perspective of the image. Some people tell that should use this lens for candid picture with empty background.
The suggestion of using telephoto is do not use the lower speed of shutter than 1/focal length for example, if you use lens 135mm , you should use speed of shutter equal or higher than 1/125 however, if it need to use the lower speed you should use the tripod.


In general we use the telephoto lens for take picture with give more perspective and less distortion.








If you use wide lens take the picture in close distance will give more distortion as:


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