On top of the mountain shooting sony np-f330 battery wide earth, often choose small aperture photographer, makes the picture from the most distant to recent place are clear imaging, and focus on leaves, flowers, trees and other single subjects of the main body is clear, the background falsified. At this time of the subjects and still has a clear scenery of the range, the range called the depth of field. In the scenery photography, depth of field control is one of the common shooting techniques. In the focal length of the lens, shooting distance and composition all don't change, adjusting aperture can control the picture of the depth of field. The greater the aperture, the shallow depth, the effect of the more obvious background melt. Instead, the smaller the aperture of the depth of field, the deeper, the clearer background.

In fact, of the sony np-fh70 battery depth of field is made up of three factors of the decision. The three factors were the focal length of the lens, shooting distance and the size of the aperture. Each factor of depth of field changes can play a vital role. So if you want to adjust of the depth of field, can adjust the three factors of a certain or their combination.

If the chart shows, the lens is inversely proportional to the focal length and depth, the premise condition is shooting distance and aperture unchanged. Shooting distance and aperture size on the influence of the of the depth of field respectively by two other factors don't become premise. Large aperture lenses advantage is: focal length of the lens and shooting distance because in many cases is difficult to adjustment, so want to control of the depth of field, often only from the new world aperture.sony np-fh100 battery