Monday, June 8, 2009

How to use a Canon Wide Angle Lens

There is a very interesting feature that you can play around with when you are using a canon wide angle lens and that is the perspective stretching capability. What this is is the ability to things that that when looking through a wide angle lens, it may seem like the distance between the objects is much more than it really is. When looking at an object that is not very far away in the distance, it may appear that the object is much farther off than it is in reality. The object's proportions may increase dramatically; this effect can can make the object closest to the camera appear to be huge, and those farthest away seem to fade into the distance.

If you can imagine looking through a wide angle lens at two parallel lines stretching out away from the camera, the lines will merge at a distant point. This, for the wide angle lens, is called the perceptive vanish point. This means that at this distance the objects may represent a small point or cannot be seen at all. The normal lens camera can be farther away from the focal plane than for a wide angle lens.

As an example if you have two children who are similar in height, one may be nearer to the camera and the other may be a few feet farther away. Now you can take a photo with a wide angle lens, you will now see that the one who was farthest away looks a lot smaller when in fact they were of similar height. This will give you some perspective and effect you can achieve by using a wide angle lens understanding the stretching perspective.

There are a lot of benefits for a photographer when using a wide angle lens, as mentioned when there are two subjects, the one nearest the camera then becomes the primary subject. It is easy to assume this without additional thinking, and this happens when using a wide angle lens as it is much simpler to focus the viewer’s attention to the main subject.

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