If you are a photographer or just someone that loves taking pictures using your camera, specifically the single-lens reflex (SLR) camera, you must know what zooms are for. Zoom lenses are added to your basic camera unit to be able to focus on a subject correctly. It is similar to filters that you also add on your camera for specific special effects. During the past, you would see a photographer carrying his huge camera case which contained about half a dozen different lenses. Each of these lenses has a fixed focal length and can only be used for a certain type of focus shot. If the photographer wants to take a shot on something from a different angle, he would need to change lenses. That takes a lot of time and possible loss of the good view for the shot. Having all these lenses and carrying them every time you have a shoot can be a big burden, not to mention, expensive. Thanks to our ever improving technology, zoom lenses were introduced. Read on about Zoom.

Tags: My Virtual School, Photography