What is the Zoom for Camera Lens?

What exactly is zoom? How much is needed?

Zoom with the camera lens is an important term for DSLR camera, also important to select the right zooming to the purpose of the requirement. Here's how far you can take a picture. Calculations are expressed in millimetres. It has two values, near size is called wide and long-distance is called telephoto. 

Wide-angle shows more of the front view, this tends to get smaller in telephoto, resulting in a smaller part. For example 25-250mm, it means 25mm in wide-angle, 250mm in telephoto. 

It can be written as 10x. X means the multiplier of the value of the wide-angle. There are currently 35x (640mm) point-and-shoot cameras (Canon SX30IS).

The zoom that has been talked about for so long is the lens. There is also another thing called digital zoom. The software does this. If you want to get a good quality picture, it is better to keep it out of the calculation.

How much zoom camera you will use depends on the type of image. If you have a hobby of taking pictures of birds, the more the better. 

If you need to take pictures of family, nature, etc., then you don't need much zoom. The better the picture of the flower from near, the better the picture from a telephoto.

In SLR cameras, one lens can be opened and another can be fitted. So users use different types of lenses from wide to super-telephoto. 

You need to zoom in as far as you want to take pictures (300mm +). Inexpensive SLR cameras are provided with 18-55mm lenses for normal operation as a kit lens. 

Experts say 85mm is needed for a good portrait. For this 85 mm prime lens is available. Some use a 135mm or 200mm lens.